Move with ←→ or AD, jump with Space, ↑ or W. On a phone, use the buttons. Gamepads work too.
The level lies. Floors vanish, spikes pop, doors run away, gravity flips, lights go out. Every trap kills once; then you know it is there.
Respawns are instant. A ghost replays your last run and a marker stays where you died, so each death teaches something. Fewer deaths, more stars and points.
Keys: ←→ move · Space jump · R restart (counts as a death) · L levels · P pause · M sound