Well anything evolving colors are strict as this game was submitted to a game jam with a limiting color palette, so I must follow rules. As of now, I'm running on the Free Edition of the game engine, and so I can only add so much code before I run out of space. So once I get the full version, I'll be more than glad to add some extra challenges, maybe throw in some more squirrel types (that follow the color palette) and of course, more nut variations that reward more points...;) Thanks for the feedback!