Thanks for taking the time to try our game.
First of all we are aware of the menu/UI problems and every time we make a game we make something wrong with resolutions, we still have a lot to learn in that field.
For the tile sizes and characters we look up to bomberman and we noticed that characters was two tiles ( or 1 1/2 tile) tall but colliders only one. We use that trick. But we can do some tweek here and there to smooth the gameplay.
You're right for the sfx, we plan to add a sound manager in the menu post jam to fix the issue.
Yes the UI element for telling if you can make a copy is essential! We noticed that after a little bit of "not-in-team" play testing after jam deadline.
We learned a lot, and the most important thing it's, no pun, we need to better manage TIME!
Thanks a lot for your extreamly precise feedback!