Nice little sokoban game. Some quality of life changes would make it even better, like a quick restart button (e.g. the R key) so that you don't have to go to the pause menu each time and also an undo button would be nice. It'd also be great to have some sort of per-level "high score", so you can see how many moves it took you to clear a level and try to lower this number and beat the level more efficiently. I think that would add a lot of replayability