Pretty nice matching game with the added challenge of enemies that break your line. Easy to understand. I wasn't sure at first if I could go through other lines but you can, and I wasn't sure if the color mattered but it doesn't seem to. I played a custom game with 100 pairs and 50 enemies and at some point the colors repeat so you can't tell which pair is correct based on the colors anymore because there are multiple pairs using the same color. Overall nice and I like that there is a leaderboard.