Stone
A steady foothold. It rises with the cave; keep moving.
Side project
100-Floor Descent
A little courage. A long way down. An original take on the classic left–right–gravity challenge, from lantern-lit stone to the sanctuary below.
AN ORIGINAL CAVE EXPEDITION
100-Floor Descent
A little courage. A long way down.
Health
10/10
Floor00
Active time0:00.0
← → or A / D · P to pause · Enter to begin
Steer left and right. Gravity does the rest. Stay below the spikes and above the bottom edge.
LEFT · RIGHT · GRAVITY
Field guide
No jump button. No ads. No attempt limits. Just one more floor.
Crumbling
Cracks on contact, then breaks after 0.45 seconds.
Spring
A short bounce. Steer away so it does not steal your descent.
Spike trap
Sharp teeth, four health lost. Find the other route.
Left conveyor
Moves you left while you stand on it. Counter-steer or ride it.
Right conveyor
Moves you right while you stand on it. Follow its chevrons.
The rhythm of the descent
Walk off a platform to fall. Land on lower platforms to earn progress: five rows equal one floor. Revisiting a platform never adds floors. The cave rises faster as you descend.
Health, not healing floors
Start with 10 health. Spikes cost 4, the ceiling costs 5, and falling off-screen ends the run at any health. After 2 seconds without damage, recover 1 health, then 1 each second. Normal platforms never heal you.
A moment to recover
Hits give 0.75 seconds of damage protection. Ceiling contact knocks you free instead of pinning you. A shield absorbs one hit, cannot stack, and never saves a bottom fall.
A different way down
Remix only: dash horizontally for 0.16 seconds, with a 4-second cooldown. A shield blocks one hit. The hourglass slows the cave and falling to 65% for 3 seconds, but steering and the active timer remain normal. Dash is not invulnerability.
Your course, your record
Classic and Remix keep separate floor records. Trial times compare only the same seed and rules version; the last 24 improved seeds are retained. Practice is unranked. Records stay in this browser; there is no account or online leaderboard.
Play your way
Use Focus view for a larger cave. Touch buttons support two fingers; you can also enable touch on either half of the cave. Sound is off by default. Reduced effects follow your device preference, with an extra manual option. Blur, hidden tabs, and scrolling away pause the run.