When i saw "tetris in 4 dimensions" i was *SCARED* that you had submitted something along the lines of "5d chess with multiverse time travel". Thank god its just a cute little puyo puyo game. The game looks lovely, sounds lovely, and feels quite nice to control, though i often found myself releasing 1 step too late. maybe a skill issue, maybe the controls need slightly more tolerance.
The game *needs* a button prompt at the start. I spent literally like 30 seconds just pressing buttons watching the thing bounce back and forth before figuring out what to do.
The main menu animation bugged out on me the first time i played, the scene transition started playing automatically. That was strange lol
The lose condition be "Have 5 blocks touch the the other side" needs to be slightly better communicated. As-is, it's only obvious that'll hurt you once you've been hurt, and even then i didnt notice the health bar until the first time i died. The run just kinda ended and i was like "huuuuh??!". again, maybe im dumb, but maybe the UX design needs a bit of work there.