cool game! i liked the concepts :)
some glitches:
- jumping never refreshes unless the cube has a platform directly below its center
- biggest thing that needs fixing imo
- cube can bypass the level boundaries if pressing against side and switching to 2d
- cube can land on top of level boundaries using the last method or by reaching high enough and pressing against the edge of the screen
- this allows you cheese most levels
- spamming tab can cause the camera to be in orthographic mode in 3d and perspective mode in 2d
- some weird shadows
- cubes occasionally fall through the platform they're standing on when switching to 2d
- if cube A is in front of a platform 1 and cube B is active when switching to 2d, cube B can't touch platform 1 until it leaves the area in front of it, when platform 1 moves forward
- the platform that moves directly up and down will squish the two cubes together if they are stacked under it
of course you don't have to fix all/any of these, just wanted to create a log of ones i found as a QA Master™ :P