Is the floating platform safe to land on in Level 15?

No. Its top and underside are covered with spikes, so use the open lane beneath it and rise only for the floor hazards.

How do I pass the hanging spike columns?

Keep the potato in the clear lane, then use short timed jumps over the ground spike patches without rising into the suspended columns.

Mr Potato level guide

hard

Thread the lower route around the spiked floating platform, hanging spike columns, and floor hazards to reach the right door.

Layout: The raised start is on the left. Spike patches cover the lower floor, a floating platform has spikes on its top and underside, and hanging spike columns separate the route from the raised right exit.
Goal: Cross the hazard field and enter the arched door on the far-right platform.
Opening: Jump from the left ledge into the open lower lane and pass beneath the spiked floating platform.
Danger Zone: The floating platform's two spiked faces, the suspended columns, and the ground spike patches leave only narrow timing windows.
Mechanics: The puzzle is about vertical clearance: stay low under the floating hazard, then use short jumps to clear floor spikes and pass the hanging columns.

Treat the floating platform as a hazard boundary; do not aim for its spiked top or underside.
Use short jumps for each floor spike patch so the potato does not rise into a hanging spike column.
Think in chain clears. The best move is the one that sets up the next two moves, not just the quickest current match.

Jump right from the left raised ledge into the open lower lane, avoiding the top spikes on the central floating platform.
Move beneath the floating platform and pass through the first clear gap before the nearest hanging spike column.
Use short rightward jumps over the ground spike patches while maintaining clearance from the platform underside.
After the central hanging column, continue through the next open lane and time another jump past the farther hanging spikes.
Reach the raised right platform and enter the arched door to complete the level.

Jumping onto the central floating platform exposes the potato to spikes on its top surface.
Holding jump through the whole crossing lifts the potato into the hanging columns; use separate short jumps for the floor hazards.

Is the floating platform safe to land on in Level 15?
No. Its top and underside are covered with spikes, so use the open lane beneath it and rise only for the floor hazards.
How do I pass the hanging spike columns?
Keep the potato in the clear lane, then use short timed jumps over the ground spike patches without rising into the suspended columns.