Browser demo / Chapters 1–3
Subsystem Synth
Find your first route.
Play the first three chapters here. Tap or click inside the game to start audio. Browser progress stays on this device and does not sync with Android.
Controls: drag between dots to draw train routes, then use the game's Play or Step controls. Follow the in-game tutorial.
Save locally: use Settings → Export Save to keep a backup. Clearing browser storage removes local progress. The Android game and its purchases are separate.
Audio & sharing: sound begins after your interaction. Unsupported sharing falls back to downloading the generated song. Android purchases and restore controls are unavailable here.