I haven't finished this game yet and don't think I will for a while, but that's a good thing. The controls are a tiny bit frustrating with my clunky trackpad (I'm sure this would be seamless with a mouse), but they're so simple that I'm able to just focus on the puzzles and colors. 

This is the kind of game that I can just whip out and play for a couple minutes, then put away again. There's no pressure or worry about losing my progress, just the fun of spinning objects, unlocking new paths, and retracing old ones to find secrets I missed.