You can do a “The Floor Is Lava” level.
Title: “Rising”
The player has to reach the top before the lava consumes them.
(Use this guide to help you with the mechanics)
Use futuristic props, like the ones from “One Way Out” and spread them around randomly, making sure to keep each prop within reach of the player.
Make walls going straight up, so that the player has a sense of direction.
You could add like a “Lava Boss” (eg. “Inferno” Gim) at the end!
Colors could include, orange, red, yellow. Basically all fire-related.
Nice, but to prevent clutter next time, add it to your previous post:
Or edit your OP.