bonus spins) - Receive free spins and use them on a particular real money slot game or games and keep whatever winnings you earn (sometimes subject to a playthrough requirement). Deposit match bonus - Deposit money, and the online casino will match your deposit at a stated percentage.Cash back bonus - Some sites will award you cash back as a refund for your losses during a certain period of play.Bet-and-get bonus - Wager a minimum amount playing a particular game or games during a designated period and receive a bonus in return.