RTP, or Return to Player, is a term used in the casino world to describe the percentage of wagered money a slot machine will pay back to players over time. But before you sit down and start feeding those machines your hard-earned cash, there’s a number you should be familiar with: the RTP. Yes, we’re talking about slot machines, those mesmerizing devices that can make or break your Vegas dreams in a heartbeat. Lights flashing, reels spinning, and the enticing sound of coins clinking.