I got somewhat confused with the colors sometimes. First I thought i should carefully plan out which color to pick up or not because i thought i could only traverse the blue walls as blue slime, but in the end it doesnt matter. Also it was a little bit tedious to pick them all up before you get to play the actual part of the level, especially once the boulder was introduced. You could easily add a slime, that gives you that whole amount directly, or start with more basemoves. Or in the best case, distribute them in the level, so that it actually matters which one you pick up (like in the first levels). Non the less you made a nice game in such short time and it was one of my favorites. Would like to play a more polished version someday :)