UNO 4 Colors is the classic shedding card game: you play a card matching either the colour or the number of the one on the pile, and the first player to empty their hand wins the round.
The action cards are what make it a game rather than a race — skips, reverses, draw twos and wild draw fours all let you change the flow, and holding one back for the right moment beats playing it immediately.
Play a card matching the colour or number of the top card. Action cards skip, reverse or force draws, and the first player to empty their hand wins.
When you're genuinely stuck or when changing colour hurts a specific opponent — not simply because it's playable, since it's your safety net.
Yes — tap cards to play. Nothing to install.