4 Color Cards Game is a fun and engaging Flash game that’s based off the highly popular UNO card game. The game involves cards in four different colors, which are red, blue, green, and yellow. There are also many action cards that change the pattern of the game. When you first start playing, you’ll be asked to select the number of players. The game only allows for a single human player, but you can play against one, two, or three opponents. Once you’ve selected the number of players, the game will deal the cards. Each player receives seven cards to start the game, and the object is to be the first player to play every card in your hand.