Very cute concept and setting! It got me engaged really fast. I have one suggestion: what if you could switch characters directly by pressing 1-3 or at least shuffle through them with a seperate key and leave the use-key for only that purpose. I have two rationals for that:
- I accidentally switched characters too often with RED, because dust keeps generating right next to another character.
- The two seconds of walking to another character and switching are, compared to the rest of the game, just not fun.