Deterministic by construction
A fixed 120Hz simulation drives everything. The same inputs always produce the same run, which is what makes replays and the solver meaningful.
A precision auto-runner
with a solver in the build.
Q-Runner is a browser platformer with cube, ship and ball modes, gravity portals, a full level editor and a Q-learning playground. No backend, no physics engine — the simulation is hand-rolled and shared by the game, the editor and the build-time validator.
- Built-in levels
- 10
- Tick rate
- 120Hz
- Modes
- 3
Levels proven clearable
Every built-in level is grown against a reachability solver that may only change its input every 50ms. If a level ships, a person can finish it.
Endless mode that cannot cheat you
Chunks are generated ahead of the player and rejected unless the solver can still cross them, so you never hit an impossible wall.
A learner you can watch
A tabular Q-learning agent trains in your browser against the same engine you play, with its table saved between sessions.