The risk, sometimes, with the random management of a level, is that we come across really difficult, even unfair ones (the blue character that pops right in front for example, or most characters that are stuck to the edges). With one or two more lines of code to avoid this kind of situation (new characters only appear at a distance from the head of the convoy, and count the number of characters touching the edge to limit their number), this game would have a lot of potential. I particularly like the idea of "healing" the blue characters, which turns these obstacles to avoid into a goal to achieve. The music is pleasant, the graphics a little sketchy but clear. The use of 3D is a big risk for limiting the number of colors, because the cast shadows could add colors to the expected number. But as a player I had a great time with your game.