Almost everyone has played Uno at one time or another, but most people haven’t played Combat Uno! Way back in the 1990s before all my friends were addicted to World of Warcraft and Words with Friends they used to sit around and play Uno, and one day one of them (exactly who came up with the idea is lost in the annals of history) came up with the idea of Combat Uno. The basic concept is simple: if someone plays a card and you have the exact same card (same color and number or type) you can immediately try to play it even if it’s not your turn. If you get your card down before the next card is played your card is the legal play and the turn proceeds to the next person after you. In effect you can interrupt the play and change the turn order at any time. It makes for a very hectic but very fun variant.