This isn’t really a game, per-say, but it’s kind of interesting. Basically you just need to arrange the colors so the hue flows smoothly from left to right. Can your eye distinguish the nuances from square to square?

I got a 3 (lower is better). Apparently I have trouble with the reds, but 3 seems to be pretty good. What’s your score?

Link via Sara (who got a 4) (I’m just saying).