About Betrebels. . Journey into the heart of the rainforest. Everyone's favorite Aztec Chief, Rook, is at it again in this amazing 5 reel, 25 line Cascading Reels slot machine. Betrebels is a bookmaker with a very big schedule, full of sports events to place bets, the sports envisaged are all there; From soccer to. Journey into the heart of the rainforest. Everyone's favorite Aztec Chief, Rook, is at it again in this amazing 5 reel, 25 line Cascading Reels slot machine. Journey into the heart of the rainforest. Everyone's favorite Aztec Chief, Rook, is at it again in this amazing 5 reel, 25 line Cascading Reels slot machine.