Return to Player (RTP) refers to the percentage of total bets that a slot machine or gambling game is expected to pay back to players over time. It serves as an indicator of the game's payout potential, with a higher RTP suggesting that players may receive more of their wagers back in winnings in the long run. However, RTP is an average derived from numerous spins and does not guarantee specific outcomes for individual players or sessions. It is a helpful metric for assessing the fairness and relative value of different games.