With Rainbow you have to make rainbow sets of six different colors. You make these by playing cards with colors. But you're not just playing with your own cards. You also play with the backs of the cards of the player opposite you!

The backs of the opponent's cards may be used by turning them over on the table. You don't know what kind of backsides you have. If you accidentally turn over a black card or a color card that is double in the row, you must immediately give cards to your opponent. Whoever collects the most rainbows wins!

This is a deceptively simple card game for two players, which you win thanks to some luck, a good strategy and, above all, a good memory. How far do you dare to go with turning over cards?