Interesting, not a great idea to be endless because I can just get the rocket and survive forever and that's too easy, are you planning on changing it to levels, or making it harder or impossible not to change block type when there's a portal? Rotations look a bit funny sometimes, especially when you're an upside down rocket because you slid off a block.

Fun game. Would be nice to have high score saved so I know if I'm getting any better the more I play. Also, once you have the rocket, you can just stay up against the top of the screen and never die. Maybe add a wall/ceiling up there that if you hit it you die. Or extend the portals to the top of the screen so at least you lose the rocket at some point when you go through the portal. Right now you can just fly over top of them.

After I lose a game, after I press restart I become invisible every time I jump until I hit the ground again.

Cool game but can you please make your projects branch able