Box World

Here are what all the boxes do.

Red Box: Turns off trigger and makes it easier to fall past the 2 thresholds and die
Green Box: Turns on trigger
Trigger Strip: Switches gravity
Collectible: Makes you larger and is a requirement to win and pass levels
Blue Block: Slippery
Opaque Grey Box: Next Level

R is reset level
C is reset game
P is switch level