Level Devil guide: learn traps and plan your jumps
A failed jump can tell you where the floor opens or when a trap wakes up. Use that information to change one part of your next attempt. This guide follows OnlinePuzzle's 30-level game.
Back to the game →Learn the movement before chasing the exit
Use A/D or the arrow keys to move, and Space, W or Up to jump. On a phone, use the on-screen controls. Release the jump button before the next jump: holding it does not produce repeated jumps or a second jump in the air.
Reach the door to finish a level. Watch the landing area as well as the takeoff point. A jump that clears a spike can still land on a collapsing floor or beneath a falling ceiling trap.
Treat the first approach as a test
Move toward unfamiliar ground in short approaches. Some pits initially look like ordinary floor and open when you get close. Hidden spikes also react to approach. Once a trigger is known, start the next attempt with a jump planned before that point.
Do not wait on a crumbling or fake platform to think. Observe from solid ground, then cross decisively. On moving platforms, judge the distance at the moment of takeoff instead of using the position you saw earlier.
Worked example: the first disguised gap
In level 1, the first solid platform ends at x = 290 and the next begins at x = 380. The strip between them is a trapdoor. The diagram is a simplified map of that opening, not a picture of the whole level.
Approach from the left, jump while you still have support, and keep moving toward the next solid platform. Waiting for the disguised floor to disappear leaves less room to react. There is another gap later, so landing once is not the end of the route.
Level 1 · first gap, side view
Solid floor → Trapdoor → Solid floor
Change one decision after a failure
After falling, compare your takeoff position, direction and landing point. Retry with R or the restart control and change one of those variables. Repeating the same movement without identifying the trigger usually repeats the same problem.
Later levels introduce reversed controls, changed gravity, moving exits and teleports in selected areas. Recheck movement and the door's position after entering a new area. These effects do not apply to every level.
Use the 30-level progression
The game stores unlocked progress and preferences in this browser. Continue on the same browser and device; clearing site data can remove that progress. A saved unlock is not a cloud account or a cross-device save.
For each section, use a short routine: find stable ground, identify the next hazard, choose a landing area, then jump. If a later trap surprises you, retain the part of the route you already understand and adjust the next section.