RTP (return to player) is a slot’s key mathematical parameter: the higher it is, the smaller the house edge over the long run. Below are the ten games in the SlotAtlas catalog with the highest declared RTP. Note that casinos can run reduced versions, so always check the real value in the game rules at your operator.
| # | Slot | Provider | RTP | Volatility | Max win | |
|---|---|---|---|---|---|---|
| 1 |  Mega Joker | NetEnt | 99.00% | High | x200 | Review |
| 2 |  Mystery Reels Megaways | Red Tiger | 98.06% | Very high | x10 346 | Review |
| 3 |  Money Cart 2 | Relax Gaming | 98.00% | — | x5 000 | Review |
| 4 |  | NetEnt | 98.00% | Low | x900 | Review |
| 5 |  Blood Suckers Megaways | Red Tiger | 97.66% | Very high | x20 521 | Review |
| 6 |  | Red Tiger | 97.65% | High | x10 497 | Review |
| 7 |  | Kalamba Games | 97.42% | Very high | x6 480 | Review |
| 8 |  | Quickspin | 97.34% | High | x1 225 | Review |
| 9 |  Fruit Million | BGaming | 97.34% | High | x3 000 | Review |
| 10 |  Gemhalla | BGaming | 97.17% | Very high | x5 000 | Review |
A high RTP does not guarantee a win in a single session — it only describes the average over millions of spins. For bonus wagering, combine high RTP with low or medium volatility so your balance erodes more slowly. Read more in What is RTP.