The plane's hitbox had me a little confused, but the fact that I found myself compelled to keep playing until I reached the end means you must be doing something right :)
Okay I may just be a sucker for a good pun but the text at the end was killer.
Overall pretty solid, I think. Jumping over the cubes was actually pretty challenging (though I might just be bad at platformers).
I like that the game is 3D, but something about the way the camera tilts when the player jumps made me feel a little motion sick. I wonder if it would work better to have the camera be higher up and looking down on the player, but still having it follow them/tilt the same way it does now?