Casinos make money on slot machines primarily through the house edge, which is built into the game\“s design. Slot machines use a random number generator （RNG） to determine outcomes, ensuring unpredictability. The key factor is the return to player （RTP） percentage, which is typically set below 100%, meaning players lose money over time. For example, a slot with a 95% RTP returns $95 for every $100 wagered on average, with the casino keeping the $5 difference as profit. 
Additionally, casinos profit from high volume play, as slot machines are popular and generate continuous bets. They also employ strategies like near-misses and bonus features to encourage prolonged play, increasing overall revenue. Maintenance costs are low compared to table games, making slots highly lucrative for casinos. |
