Fast-paced stacking game building coloured rainbows out of discs to match cards The cards are shuffled and placed face-down in a pile in the centre of the table, and the coloured discs are spread out evenly around the table. Each player starts with a game base on which to build his rainbow (tower). The top card is turned over and all players have to build a rainbow following the sequence of colours and symbols on the cards. The first player to build their rainbow puts the pot of gold on top to win the round. The player who wins the most rounds is the winner.