Points in slot clubs accumulate based on the amount of money wagered or the total playtime at slot machines. Players typically need to sign up for a player's card, which tracks their gameplay. The points earned can vary depending on the casino and the type of games played, with higher bets and longer playtimes generally leading to more points. These points can eventually be redeemed for various rewards, such as free play, meals, or hotel stays, enhancing the overall gambling experience.