Thank you so much! I do plan to update it with some more polished levels later. For the restart thing, I totally agree with you that R would make more sense; it's just that I used PICO-8 to develop this game, and this game editor only supports limited keys, and R is not one of them. (It also has other limitations as well, like the resolution is set to be 128x128, but these limitations are actually very inspiring, you know, design is constraint~)