A casino game’s RTP percentage, or return to player percentage, refers to the game’s theoretical expected payback to the player. A game’s RTP percentage is calculated by dividing how much players win from a game by how much they spend while playing it. For example, a slot has a 96% RTP if players win $96 for every $100 they wager. Keep in mind that figure represents the average payout and not how much you will win every time you play the game.