At first glance, DUO! looks to be just like every other match-two puzzler. You tap face down cards on the board to reveal their numbers, memorising them so that you can match two in future.

Where it differs here, though, is that you can go on a straight if you discover where one, two, and three are hiding, giving you more points. There are plenty of bonuses and minigames to round out DUO!'s eighty levels of regular play.

Check out the trailer below in anticipation of DUO! arriving on the App Store tomorrow, 5th February.