Split Signal
Split Signal asks you to solve two grids with one shared program. Courier A follows each arrow normally, while Courier B rotates that same arrow clockwise, so every command must help both routes line up.
Play Split Signal
Free in your browser. No download required; open the game and start a fresh challenge.
How to play
- Study both starts, exits and walls.
- Build one tape from Up, Right, Down, Left and Wait.
- Run it and make both couriers occupy their exits after the same tick.
What to expect
- Blocked movement becomes a wait for only that courier, which creates the timing opportunities.
- An exact breadth-first solver proves every published puzzle is solvable and records the true shortest tape.
- You get three runs per puzzle; exits are not sticky before simultaneous arrival.
Difficulty
Easy starts on small open grids. Medium adds walls; Hard uses larger grids and longer exact routes.
Frequently asked questions
Is Split Signal free to play?
Yes. Split Signal is free in your browser with no download and no sign-up required.
What should I know before playing Split Signal?
Blocked movement becomes a wait for only that courier, which creates the timing opportunities.
How does difficulty change Split Signal?
Easy starts on small open grids. Medium adds walls; Hard uses larger grids and longer exact routes.
Do I need an account to keep my scores?
No. Daily scores and lab games work as a guest. Creating a free account keeps your profile, streaks and Rival history across devices.