RTP stands for "return to player" and it refers to the theoretical percentage of money that is paid back to the player over time. It's expressed as a percentage, and the higher the RTP, the better the odds for the player. For example, if a game has an RTP of 95%, that means that for every $100 wagered, the player can expect to get back an average of $95 in winnings. It's important to remember that the RTP is just a theoretical average and it doesn't guarantee that the player will win money on any given game or session