Rainbow is a card-game duel for two players using 9 different colored cards. Each card has 2 different colors on it's front/back.
Players in turn play cards in the common area.
You can earn cards by completing a rainbow (which are 6 different colors!) or causing the opponent to make errors or shadows.
The purpose of the game is to win more cards than your opponent.
Tactics, combination skills and a good memory are what it takes to win.
You can play 1 to 3 cards on the turn.
However, if you want to play a second or third card, you must flip a card that is already in play on table.
You can pass at any time after playing a card from your hand or turning over a card from the table.
When playing from your hand, you can choose to play as it is or flip it over. After each card played, the turn may end if one of the following conditions are met:
Error︰ If two cards on the table show the same color, your opponent wins the round.
Shadow︰ If you reveal a Black card on the table after playing or flipping a card, your opponent wins the round.
Rainbow︰ If you complete the rainbow (6 different colors of cards), you win the round.
Whoever wins the round takes all the cards in play.
The loser of the previous round begins the next round.
End of game
When the deck runs out and the player can no longer replenish his hand, the game ends immediately.
The player with the most cards wins.