# Civil Systems Apps — Logic Systems

> Independent Android games about patterns, constraints, spatial reasoning, timing, and play. Official catalog published by Civil Systems LLC. PMP Sprint is an independent project-management study app in development, included alongside the games.

All listed Android games support offline gameplay, contain no ads, require no account, and keep gameplay progress locally. Free access varies by game; optional one-time purchases are described below. Subsystem Synth has a playable browser demo here; Plats and Rocky Ship link to their existing browser games. Google Play purchases do not unlock browser content. Prices, currencies, and store availability are not specified here.

## Official pages

- [App catalog](https://apps.civilsystems.org/): Ten games and PMP Sprint, a study app in development.
- [Apps website privacy](https://apps.civilsystems.org/privacy/): Website measurement and local browser storage.
- [Civil Systems privacy policy](https://civilsystems.org/privacy-policy): Mobile app data practices and terms.

## Game mechanics, alternatives, and free access

### Subsystem Synth

- [Official game page](https://apps.civilsystems.org/subsystemsynth/)
- [Google Play listing](https://play.google.com/store/apps/details?id=org.civilsystems.subsystemsynth&hl=en)
- [Official YouTube video](https://www.youtube.com/shorts/X267AzldSQ0)
- [Alternatives and comparison details](https://apps.civilsystems.org/subsystemsynth/#alternatives)

- [Free browser demo](https://apps.civilsystems.org/play/subsystemsynth/): chapters 1–3 only.

Draw a path from each station to its matching ring. Trains advance one dot per tick, so routes must work together in time: two trains sharing a dot at the same moment collide. Reroute a train, use a holding loop, and step through the simulation to find a safe journey. Each solved board becomes a procedural lofi track.

Draw a route. Discover a rhythm.. Subsystem Synth was heavily inspired by the pleasure of The Witness’s line puzzles and the clean transit-map style and atmosphere of Mini Metro. It continues that joy of looking closely, drawing a possibility, and seeing an idea click—with its own personality: moving trains, timing problems, and a solution that plays back as a lofi track.

Who might enjoy this: For players who like a puzzle that unfolds through observation: line-drawing logic, route planning, small rule changes, and the moment when a previously awkward board makes sense. The appeal is deliberate thought rather than fast reactions.

A mistake you can inspect: A collision is feedback about your plan. Step through one tick at a time to see when trains meet, then change a route or use a holding loop. There is no need to draw faster: the timing lives in the paths and the simulation, not in how quickly your finger moves.

Try the idea before choosing the full game: The first three chapters are free and ad-free on Android and in the browser demo. That gives you a way to discover whether the routing and musical feedback are your kind of puzzle. It is a finite demo, not an endless free campaign or an open-world exploration game.

An influence, and a new kind of test: The comparison to The Witness is about the pleasure of studying a board, discovering how its rules fit together, and drawing a solution. Subsystem Synth adds a moving test: trains follow your routes one dot per tick, and collisions reveal where the plan needs work. Holding loops and carefully chosen paths change when trains arrive. It is a focused routing-and-timing puzzle, with musical playback as the reward; it does not include The Witness’s first-person island exploration.

A transit diagram that becomes an instrument: The Mini Metro comparison is strongest in the clean lines, colored stations, and understated transit-map feel. The main challenge here is solving an individual board, not keeping an expanding city’s passenger network running. Each working route contributes to a procedural lofi track, so the train diagram also becomes a musical instrument. Choose Subsystem Synth when you want that transit-map mood with a deliberate line-puzzle structure.

Free access: Chapters 1–3 are free and ad-free. The Android app offers an optional one-time purchase for later chapters. The browser demo stays limited to the free chapters; an Android purchase does not unlock it. The free demo does not include the full campaign.

Is there a free, ad-free train puzzle I can try in a browser? Yes. Subsystem Synth has a browser demo of its first three chapters, with no ads or Google Play dependency. Progress is stored locally in that browser.

What inspired Subsystem Synth, and what makes it different? The Witness is the closer comparison for its self-contained line-puzzle appeal; Mini Metro is a useful reference for the visual style and transit-map atmosphere. Subsystem Synth’s own twist is running trains along your lines, avoiding collisions through route length and timing, and hearing the solution as a lofi track.

### Cozy Console

- [Official game page](https://apps.civilsystems.org/cozyconsole/)
- [Google Play listing](https://play.google.com/store/apps/details?id=org.civilsystems.cozyconsole&hl=en)
- [Official YouTube video](https://www.youtube.com/shorts/BYzxAJSJJS8)
- [Alternatives and comparison details](https://apps.civilsystems.org/cozyconsole/#alternatives)


Choose between Block Plan, Pixiloc, Tenzly, Coset, and Sortune in one app. Place blocks to clear lines, deduce a four-position color code, match numbers, arrange symbols to satisfy constraints, or sort balls into matching tubes. Each game has a daily puzzle, with additional Endless play options.

A daily puzzle ritual, without the app shuffle. Cozy Console is for someone who wants a daily puzzle ritual without choosing the same kind of puzzle every time. It puts five Civil Systems logic games in one Android app: block placement, codebreaking, number matching, symbol logic, and ball sorting.

Who might enjoy this: For someone looking for a small daily brain break with a bit of variety: perhaps numbers today, a color code tomorrow, and a sorting puzzle after that. Five games share one app and familiar settings.

A routine without five separate installs: Daily puzzle requests often describe a ritual, not a demand for a huge new game. Cozy Console brings together Block Plan, Pixiloc, Tenzly, Coset, and Sortune, so you can switch the kind of thinking without changing apps. It does not add crosswords or Sudoku by implication: these are five particular logic games.

Keep the puzzle separate from the purchase: Today’s puzzle in each game is free, with no ads and no subscription. The optional Bundle Pass is for archives, additional Endless access, and case colors. Your daily habit does not depend on watching a video or paying a recurring fee.

One collection, five different ways to think: Instead of installing separate block-puzzle, number-match, codebreaker, logic, and ball-sort apps, use one collection with shared display and control settings. This is a good fit when you enjoy variety and offline play. It does not include crossword, word-search, Sudoku, or nonogram puzzles, so it is not a substitute for a collection built around those formats.

Free access: Today's daily puzzle in each of the five games is free and ad-free. The optional one-time Bundle Pass unlocks past daily puzzles, additional Endless access, and extra case colors. Archives and the additional Endless access are separate from the free daily puzzles.

Which games are included in Cozy Console? Block Plan, Pixiloc, Tenzly, Coset, and Sortune. Their mechanics range from placing blocks and matching numbers to deducing a code, ordering symbols, and sorting balls.

Do I need a subscription for the daily puzzles? No. Today's daily puzzle in each game is free. Optional extras use a one-time Bundle Pass rather than a subscription.

### Plats

- [Official game page](https://apps.civilsystems.org/plats/)
- [Google Play listing](https://play.google.com/store/apps/details?id=org.civilsystems.plats&hl=en)
- [Official YouTube video](https://www.youtube.com/shorts/oCS63L9NWG0)
- [Alternatives and comparison details](https://apps.civilsystems.org/plats/#alternatives)
- [Play in your browser](https://plats.civilsystems.org/): progress is separate from Android.


Arrange homes, roads, trails, and parks to create balanced communities. Each site offers a different spatial puzzle, inviting you to experiment with connections and layouts at your own pace, without timers or financial management.

A small place for a planning mind. Plats is a small, artful land-planning puzzle for people who notice how a place fits together. Arrange homes, roads, trails, and parks, then look again: could the same pieces make a better neighborhood? There are no timers or financial-management systems pushing you past the interesting part.

Who might enjoy this: For architects, land planners, civil engineers, and anyone who enjoys laying out a place—even off the clock. The pleasure is in adjacency, access, connection, and finding an arrangement that feels resolved.

Planning curiosity, without a management shift: If a city builder leaves you managing budgets when you really wanted to arrange a neighborhood, Plats narrows the brief. Work with homes, roads, trails, and parks at your own pace, without a countdown or financial system. It is a spatial puzzle rather than a city that demands constant attention.

An off-duty sketchbook for a planning mind: Think of it as playing with the relationships on a small plan: what connects, what sits next to what, and how a few moves change the whole arrangement. The watercolor presentation keeps that exploration informal. Plats is a game, not CAD, a zoning checker, or a substitute for professional planning tools.

Arrangement before administration: Plats puts the focus on the spatial relationships between homes, roads, trails, and parks. If you enjoy the network thinking of a game such as Mini Motorways, that curiosity may feel familiar, but the task here is different: find a balanced arrangement on a puzzle site. The point is not to keep up with a growing city’s traffic demand. It is to take your time with a small place and work out what connects.

Free access: The Android puzzle-solving experience is free and ad-free. An optional purchase adds studio features and visual styles. Plats supports offline gameplay; no account is needed for the game.

Is Plats a city-management game? Plats is a land-planning puzzle. You arrange homes, roads, trails, and parks; you do not manage a city's finances or race a timer.

Can I play a free land-planning puzzle offline? Yes. Plats' Android puzzles are free, ad-free, and support offline play. Optional studio and visual extras are separate.

### Rocky Ship

- [Official game page](https://apps.civilsystems.org/rockyship/)
- [Google Play listing](https://play.google.com/store/apps/details?id=org.civilsystems.rockyship&hl=en)
- [Official YouTube video](https://www.youtube.com/watch?v=kVKXjBQ8an8)
- [Alternatives and comparison details](https://apps.civilsystems.org/rockyship/#alternatives)
- [Play in your browser](https://rocky-ship.netlify.app/): progress is separate from Android.


Fly into a planet's gravity well to enter orbit, then tap to slingshot toward the next planet. Chain clean captures to build speed and score. Unlock ships with different handling and abilities as you chase your next run.

One hand. One tap. Another orbit.. Rocky Ship is for the 'one more run' moment: catch a planet's gravity well, wait for the right angle, and tap to launch toward the next orbit. It keeps the action to one hand and makes timing the main skill.

Who might enjoy this: For the player searching for a one-tap arcade game, a one-handed space game, or a compact score chase that works offline. One well-timed launch matters more than a screen full of controls.

Simple input still leaves room for skill: The core action is a tap to leave orbit. You choose the moment, catch the next gravity well, and try to keep a clean chain going. One-handed describes the input, not a promise that reflexes do not matter: if you want a fully turn-based or no-precision game, a logic puzzle from the collection is a better fit.

A run stays a run: Rocky Ship is active orbit hopping, not idle progress or fleet administration. There are no ads between attempts, no forced video breaks, and no energy timers. The optional Elite Ship Package is separate from the free core game. Ship differences give you another feel to explore, rather than another menu to manage.

For orbit hopping, rather than an idle space game: Choose Rocky Ship if you want to control every launch, build speed through clean captures, and chase a better score. It is not an idle game that advances while you are away, a fleet-management simulator, or an open-world space adventure. The ships give you different handling and abilities within the same focused slingshot loop.

Free access: Rocky Ship is free to play and ad-free, with an optional Elite Ship Package. The core orbit-hopping game is available without that purchase and supports offline gameplay on Android.

Is Rocky Ship a one-finger game without ads? Yes. You time taps to leave orbit and aim for the next planet. Rocky Ship has no ads; the optional Elite Ship Package is separate from the free core game.

Does Rocky Ship play itself? No. Each launch depends on your timing. It is an active arcade score chase, not an idle or incremental game.

### Pixnay

- [Official game page](https://apps.civilsystems.org/pixnay/)
- [Google Play listing](https://play.google.com/store/apps/details?id=org.civilsystems.pixnay&hl=en)
- [Alternatives and comparison details](https://apps.civilsystems.org/pixnay/#alternatives)


A hidden pixel image appears one row at a time. Start with eight possible answers and discard the decoys to reveal more pixels. Guess the picture when you recognize it, or remove all the decoys to win.

A little picture, one good deduction at a time. Pixnay suits players who enjoy recognizing a picture from incomplete information. One image gradually appears as rows of pixels light up, and each discarded decoy gives you more to work with. The daily challenge is identifying the image, not building a word from letters.

Who might enjoy this: For people who like a quick visual mystery: a daily picture puzzle, pixel-art recognition, or eliminating possibilities from a few clues. You are identifying an image, not proving you know a particular word.

A picture is the clue, not a decoration: Rows of pixels gradually reveal the hidden image. Start with eight possible answers, discard decoys, and decide when you have enough information. If you enjoy picture guessing but not typing or spelling answers, that elimination format is the useful difference. It is not a nonogram with numerical row and column clues.

A familiar little object, with a daily question: The handheld-style shell and glowing pixel display give the puzzle a tactile identity. The daily puzzle is free and ad-free; past puzzles and extra modes are optional extras. It is a focused visual guessing game, not a promise of an unlimited free archive.

Recognition rather than spelling: 4 Pics 1 Word is a picture-based word puzzle. Pixnay takes a different approach: start with eight possible answers and eliminate decoys as a single pixel image is revealed. Try Pixnay if visual recognition and elimination are what you enjoy. If you specifically want to spell the word linking four photographs, it is a different puzzle format, not a replacement with the same rules.

Free access: The daily puzzle is free and ad-free. An optional purchase unlocks past puzzles and extra modes. The Android app supports offline play, so the daily-puzzle format does not require an always-on connection.

Is Pixnay a nonogram or paint-by-number game? No. You recognize a gradually revealed image and remove incorrect answer choices. You do not fill cells from row-and-column number clues or color a picture by number.

Can I play a daily picture puzzle without ads? Yes. Pixnay's daily picture puzzle is free and ad-free. Its archive and extra modes are optional paid additions.

### Pixiloc

- [Official game page](https://apps.civilsystems.org/pixiloc/)
- [Google Play listing](https://play.google.com/store/apps/details?id=org.civilsystems.pixiloc&hl=en)
- [Alternatives and comparison details](https://apps.civilsystems.org/pixiloc/#alternatives)


Deduce a hidden code with exactly four positions. After each guess, feedback identifies correct colors in the right positions and correct colors in the wrong positions. Difficulty changes the available palette to four, six, or eight colors; the code always stays four positions long.

A daily code worth thinking through. Pixiloc is a daily codebreaker for people who enjoy testing a hypothesis, reading the feedback, and narrowing the possibilities. The secret code always has four positions. Difficulty changes the palette to four, six, or eight colors, so the challenge grows without changing the code length.

Who might enjoy this: For someone who likes a classic codebreaker, a small daily deduction puzzle, or a shared challenge that does not depend on vocabulary. Each guess is a test of what you currently think the hidden code might be.

Four positions, whatever the difficulty: The code length never changes. Four, six, and eight describe the available color palette, not the number of positions. More available colors widen the possibilities while keeping the same readable four-position format. Use feedback from earlier guesses to narrow the next one.

A daily puzzle without a word list: There is no dictionary to memorize or spelling requirement. The logic is in the color-and-position feedback, in the tradition of Mastermind-style codebreakers. Today’s puzzle and the previous six days are free and ad-free, with an optional purchase for older archive puzzles.

An old pleasure, a daily format: The familiar appeal is deduction from correct-color/correct-position and correct-color/wrong-position feedback. Pixiloc puts that idea into a shared daily puzzle with an offline Android app. Choose it for a daily color-code ritual. It is not a word-guessing game: there is no vocabulary test, spelling rule, or dictionary to work through.

Free access: The daily puzzle and the previous six days are free and ad-free. An optional one-time purchase unlocks the archive of older puzzles. All difficulties keep four code positions; four, six, and eight refer to the available colors.

Can I play a daily color-code puzzle without ads? Pixiloc offers free daily color-code puzzles without ads. Guess a four-position code and use the feedback to refine the next guess. Older archive puzzles are an optional purchase.

Does hard mode make the Pixiloc code longer? No. The code always has four positions. Easy, medium, and hard change the available palette to four, six, and eight colors.

### Block Plan

- [Official game page](https://apps.civilsystems.org/blockplan/)
- [Google Play listing](https://play.google.com/store/apps/details?id=org.civilsystems.blockplan&hl=en)
- [Official YouTube video](https://www.youtube.com/shorts/_isDVnS7Eko)
- [Alternatives and comparison details](https://apps.civilsystems.org/blockplan/#alternatives)


Drag blocks onto the board and complete rows or columns to clear them. Each cleared line reveals part of a hidden picture. Solve the daily picture in as few moves as you can, or keep going through successive pictures in Endless mode.

A block puzzle with something to uncover. If you like placing blocks and clearing lines, Block Plan keeps that satisfying core and adds something to uncover: each cleared line reveals part of a hidden picture. Play a shared daily board or see how far you can progress through pictures in Endless.

Who might enjoy this: For someone looking for a block puzzle without ads, a daily hidden-picture challenge, or an Endless mode they can play offline. The rules are easy to recognize; choosing where a piece belongs is the work.

More than chasing the next number: The daily board gives line clearing a visible objective: uncover a hidden picture in as few moves as you can. Endless strings successive pictures together. Neither description implies that every set of pieces leads to a complete clear; this is still a placement game where your choices and the pieces you receive matter.

No ad break for a finger slip: Block Plan includes Undo, so a misplaced piece is not automatically the end of a run. The free daily window and Endless mode have no ads. Full rows and columns clear; square regions do not. That distinction matters if you arrive from a game such as Woodoku, while the block-placement appeal may feel familiar from Block Blast!.

Familiar blocks, a different reason to clear: If you enjoy fitting pieces and clearing space in Block Blast!, Block Plan starts with familiar decisions. Its own direction is the picture beneath the board: each clear uncovers a little more. The daily challenge gives you a particular image to reveal, while free Endless play carries you through successive pictures. The attraction is still finding the right place for an awkward piece, with an extra reason to finish the board.

Line clearing, with the rules made clear: Woodoku combines block placement with clearing rows, columns, and squares. Block Plan clears complete rows and columns to uncover pictures. If square-region clearing is essential to what you like about Woodoku, note that difference; if line clearing and a daily reveal are enough, Block Plan offers a distinct version of the block-puzzle idea.

Free access: Today's puzzle, the previous six days, and Endless mode are free and ad-free. An optional one-time purchase unlocks the full archive of past daily puzzles. There is no subscription required for those free modes.

What is a free block puzzle without ads? Block Plan offers free daily line-clearing puzzles and free Endless play without ads. Clearing rows or columns reveals a hidden picture; older daily archives are an optional purchase.

Does Block Plan use Sudoku-style square clearing? No. Its clears come from completed rows and columns. The hidden-picture objective is part of what distinguishes it from block puzzles built around square regions.

### Tenzly

- [Official game page](https://apps.civilsystems.org/tenzly/)
- [Google Play listing](https://play.google.com/store/apps/details?id=org.civilsystems.tenzly&hl=en)
- [Alternatives and comparison details](https://apps.civilsystems.org/tenzly/#alternatives)


Pair equal numbers, or two numbers that add up to ten, along an allowed line with nothing between them. Cleared rows close up. Keep finding pairs until the board is empty. Daily boards are built to have a complete solution without adding rows.

Make a little room for number logic. Tenzly is for players who spot a pair before they see the whole solution: equal numbers, or two numbers that make ten, disappear when their connection is clear. Keep clearing pairs and closing rows until the board is empty.

Who might enjoy this: For people looking for a solvable number puzzle, make-ten pairs, or a daily number-matching game without ads. It suits the player who wants to reason through a board rather than wonder whether the starting numbers allowed a finish.

The daily board starts with a way through: Tenzly constructs daily boards backwards from an empty board, so a complete clear exists without adding rows. That guarantee describes the starting puzzle; it does not mean every possible sequence of matches will win. Free Undo, reset, and hints let you revisit an approach instead of treating a dead end as a demand to watch an ad.

A familiar rule, a different daily challenge: As in Number Match-style games, equal numbers or pairs totaling ten can clear when they have an allowed connection with nothing between them. Tenzly’s daily mode is a fixed-board deduction problem. Endless is separate: it has its own rules, including no Undo, and a hint costs within that mode. Both modes are free and ad-free.

A fixed daily board you can reason through: Easybrain's Number Match uses equal-number and sum-to-ten pairs and lets players add rows when they run out of moves. Tenzly's daily boards are built to have a full clear without adding rows. That makes the daily challenge a fixed deduction problem: find a route through the existing board, with hints and undo available. Tenzly also has a separate Endless mode, whose rules differ from the daily boards.

Free access: Daily puzzles and Endless play are free and ad-free. The optional one-time Supporter Pack adds past daily puzzles and five extra shell colors. It is not needed to solve today's puzzle or play Endless.

Can I play equal-number and make-ten puzzles without ads? Tenzly offers ad-free number matching with equal-number and sum-to-ten pairs. Daily puzzles and Endless are free; archives and additional shell colors are optional extras.

Do I have to add rows to finish a Tenzly daily puzzle? No. Daily boards are constructed with a complete clear available without adding rows. Endless is a separate mode with its own rules.

### Sortune

- [Official game page](https://apps.civilsystems.org/sortune/)
- [Google Play listing](https://play.google.com/store/apps/details?id=org.civilsystems.sortune&hl=en)
- [Official YouTube video](https://www.youtube.com/shorts/WvDUxJVCM0c)
- [Alternatives and comparison details](https://apps.civilsystems.org/sortune/#alternatives)


Tap a tube to pick up its top ball, then tap another tube to move it. A ball can land on a matching color and shape, or in an empty tube. Sort every tube into one type. Every move plays a note, and your finished run plays back as a tune.

Sort by shape. Play by ear.. Sortune is a color-and-shape sorting game with an extra payoff: every move contributes a note, and your completed run plays back as a tune. It is for someone who likes making order out of a crowded set of tubes, at an unhurried pace.

Who might enjoy this: For a ball-sort player looking for daily puzzles, useful shape cues, and an ad-free sorting game that works offline. The music is a reward for the decisions, and you can turn sound off when you want quiet.

Shapes carry the information too: A color-only puzzle can be difficult to read when shades look similar. Every Sortune ball has a distinct symbol, so matching does not depend on color alone. Light and dark modes and reduced effects offer additional choices. These are specific design features, not a claim that one setup will suit every player’s vision.

A solvable start, with room to reconsider: Each daily board is checked by a solver before you play it. A solution exists from the starting arrangement, but individual moves can still create a dead end; free Undo and a hint give you ways to think again. Daily difficulties use four, six, or eight colors and shapes. Sortune moves discrete balls rather than pouring liquid.

The sorting rhythm, with something to hear: The shared idea is moving top balls between tubes until each tube holds one kind. Sortune adds a symbol to every color, shared daily boards in three sizes, solver-checked daily puzzles, and musical playback of your moves. Choose it when daily structure, shape cues, and sound are appealing. It uses discrete balls, not the liquid-pouring animation of a water-sort game.

Free access: Today's puzzles and the previous six days are free and ad-free in all three sizes. The optional one-time Supporter Pack unlocks older daily puzzles and additional case colors. You do not need it to solve the free daily boards.

Is there a free ball-sort puzzle without ads? Sortune offers free, ad-free daily ball-sort puzzles. Balls carry shapes as well as colors, and the order of your moves creates a tune. Older archives and extra case colors are optional purchases.

Can I sort by shape instead of relying only on color? Yes. Every ball carries a distinct symbol, allowing you to identify matching types by shape. The daily difficulties use four, six, or eight colors and shapes.

### Coset

- [Official game page](https://apps.civilsystems.org/coset/)
- [Google Play listing](https://play.google.com/store/apps/details?id=org.civilsystems.coset&hl=en)
- [Official YouTube video](https://www.youtube.com/shorts/wLzR30Zv23s)
- [Alternatives and comparison details](https://apps.civilsystems.org/coset/#alternatives)


Arrange symbols so every constraint is true. Rules can fix a position, set neighbors or distances, or describe relationships on a grid. Drag, nudge, link, and lock symbols while you deduce the unique solution, then check your arrangement.

A small set of clues. A satisfying conclusion.. Coset is for the player who enjoys reading clues and making every rule fit. Instead of filling a detective-style cross-reference table, you move symbols into a sequence or grid until all the positional constraints are true.

Who might enjoy this: For someone looking for pure deduction, a daily logic puzzle without guessing, or an alternative to the long cross-reference table of a traditional logic-grid puzzle. The answer is an arrangement of symbols that satisfies every clue.

The answer is in the constraints: Daily puzzles are checked to have exactly one solution. Rules concern positions, neighbors, distances, or relationships on a grid. Link symbols that belong together or lock a position while working on the rest. There are five checks per day, so working through the clues matters; unrestricted trial-and-error is not the intended rhythm.

Read the idea behind the notation: A compact mathematical rule should not require you to guess what the interface means. Tap a constraint for a plain-language explanation, or use Constraints in Words to read the rules as sentences. Shapes distinguish the symbols as well as colors. Coset is a sequencing and relationship puzzle, not a Sudoku grid or a word game.

Clues, relationships, and one arrangement: The common thread is deduction from several clues. Coset expresses the clues as positions, neighbors, distances, and grid relationships, with draggable symbols as your working answer. Choose it if the satisfying part is making constraints agree. If you want a long story involving names, houses, jobs, and a cross-off table, a traditional logic-grid puzzle offers a different experience.

Free access: The daily puzzles are free and ad-free. An optional one-time purchase adds the older daily archive and extra case colors. Coset supports offline Android gameplay with progress stored on your device.

Is Coset a Sudoku or a word game? No. Coset is a symbol-ordering and constraint puzzle. You arrange shapes to satisfy rules about position and relationships rather than fill a Sudoku number grid or guess a word.

Can I play daily deduction puzzles free without ads? Yes. Coset's daily logic puzzles are free and ad-free. Access to older archive puzzles and additional case colors is optional.

### PMP Sprint

- [Official game page](https://apps.civilsystems.org/pmpsprint/)
- Status: in development; public Google Play listing not verified. No install link.
- [Official YouTube video](https://www.youtube.com/watch?v=I3o3gqwAm9E)
- [Alternatives and comparison details](https://apps.civilsystems.org/pmpsprint/#alternatives)


Build a study rhythm with short lesson sprints, project-management concepts, original scenario questions, and explanations for each answer option. Revisit terms, use recall cards, bookmark uncertain questions, and review progress by domain and topic. The app includes a 60-question, 80-minute sprint mock rather than a full-length exam simulation. PMP Sprint is in development for the July 2026 PMP exam outline; teaching content is still undergoing review.

A little study. A clearer next step.. PMP Sprint brings the Civil Systems device-like format to project-management study. It is for learning in the gaps of a day: read a short explanation, work through a situation, and look at why one response fits better than another. This is a study tool in development, not a game or an official exam product.

Who might enjoy this: For working project managers, engineers moving into project leadership, and PMP candidates who want short, focused study sessions alongside their broader preparation. It may suit people who prefer an offline Android tool, local progress, and a planned one-time purchase over another recurring subscription.

Understand the choice, not just the letter: Original scenarios and option-by-option explanations connect decisions to concepts. Terms, recall cards, and bookmarks give you ways to revisit uncertain ideas instead of treating a quiz score as the whole learning experience. Content is still being reviewed; draft question counts are not a claim of exam readiness.

Practice that fits a break: Lesson sprints are designed for short sessions. The 60-question, 80-minute sprint mock provides a longer practice block without claiming to reproduce a full-length exam. Progress and settings stay on the device. No account or study analytics are built into the app; Android offline use is intended, while the web preview is not an offline app.

A companion to a broader preparation plan: If you are considering PMI Study Hall or other PMI preparation resources, PMP Sprint offers an independent, compact study format with lessons, original practice, and explanations. It does not replace official eligibility guidance, required education, or a full-length exam simulator. Use the exam outline and PMI’s preparation resources to decide what else your study plan needs. PMP Sprint is not affiliated with or endorsed by PMI.

A small study device instead of another subscription: Candidates comparing mobile tools such as Pocket Prep may want to consider study format, explanations, access limits, and how progress is stored—not just question counts. PMP Sprint combines lesson sprints with practice and recall in one device-like interface, with a one-time Full Access purchase planned. It is still in development, so this is a comparison of intended fit, not a claim of equivalent content, exam performance, or current store availability.

Free access: The free preview includes the first lesson step of each roadmap topic, one 10-question quiz, Terms, and Progress in the free preview. Full Access is planned as one Google Play purchase for the remaining lessons, unlimited practice, sprint mocks, recall cards, and bookmarks. No subscription or ads are planned. Public Google Play availability and final purchase terms have not been verified; no price is advertised.

Is PMP Sprint available on Google Play? The Google Play release is pending. PMP Sprint is currently in development, and this page will link to the public listing when it is available.

Does PMP Sprint provide contact hours, PDUs, or a PMP pass guarantee? No. It does not provide contact hours, PDUs, PDHs, or other continuing-education credit, and it does not guarantee a pass. It is an independent study tool, not an official PMI product.

Is the sprint mock a full-length exam simulation? No. The implemented sprint mock has 60 questions and an 80-minute timer. A full-length simulation is not part of the current product.

Is PMP Sprint a free alternative to a subscription study app? It has a limited free preview and a one-time Full Access purchase planned. The full product is not advertised as entirely free. The Android app is designed for offline use and local study progress; the web preview does not work offline.

Audience notes are editorial interpretations informed by qualitative public player requests and reviews, not measured keyword volumes or endorsements. Publisher-confirmed mechanics and purchase limits are stated separately. Game community sources were reviewed October 26, 2026; PMP Sprint publisher comparisons were reviewed October 27, 2026; publisher references are linked beside the visible comparisons on each game page. Comparisons describe gameplay fit, not affiliation or identical products.