Above, you'll find perfect replicas of the seven tetrominoes starring in the classic Tetris game, which first came out in the USSR in 1984, and the USA in 1989. The colors that Happy Island were gunning for are the ones used by The Tetris Company, a Hawaiian company that's owned the Tetris trademark in the States since 1996.

Four of the blocks -- the Orange, Blue, Teal, and Yellow -- cost 15 Facebook Credits ($1.50 USD) each, while rest -- Green, Purple, and Red -- cost 2,400 Coins each.