Strategy guide · Slots · Updated October 2026
Highest RTP slots: the best-paying online slots and how to check them
Return to player (RTP) is the share of all money bet that a slot pays back over millions of spins. A higher RTP doesn't make you more likely to win today, but it lowers what you lose on average over time.
High-RTP slots compared
| Slot | Studio | Highest published RTP | Avg. loss per $100 bet |
|---|---|---|---|
| Ugga Bugga | Playtech | 99.07% | $0.93 |
| Book of 99 | Relax Gaming | 99.00% | $1.00 |
| Mega Joker (Supermeter mode) | NetEnt | up to 99% | from $1.00 |
| Jackpot 6000 | NetEnt | up to 98.9% | from $1.10 |
| 1429 Uncharted Seas | Thunderkick | 98.60% | $1.40 |
| Blood Suckers | NetEnt | 98.00% | $2.00 |
| Starmania | NextGen | 97.87% | $2.13 |
| White Rabbit Megaways | Big Time Gaming | 97.24% | $2.76 |
| Big Bass Bonanza | Pragmatic Play | 96.71% | $3.29 |
| Gates of Olympus | Pragmatic Play | 96.50% | $3.50 |
| Sweet Bonanza | Pragmatic Play | 96.48% | $3.52 |
| Book of Dead | Play'n GO | up to 96.21% | from $3.79 |
| Starburst | NetEnt | 96.09% | $3.91 |
| Wolf Gold | Pragmatic Play | 96.01% | $3.99 |
Highest RTP published by each studio. Casinos may run lower-RTP versions, and game availability varies by casino and country. Averages are long-run figures; any single session can be far better or worse.
The catch: one slot, several RTPs
Many studios release the same slot in several versions, for example 96.5%, 94% and 92%, and the casino chooses which to offer. The game looks identical either way. Book of Dead is a well-known example, with versions well below its top figure.
How to check the RTP you're playing
- Open the slot in real or demo mode.
- Open the info, paytable or "i" menu.
- Look for "theoretical return to player" or "RTP". Some games show it in the game rules text near the bottom.
- If two casinos show different figures for the same slot, the higher one costs you less per spin.
RTP vs volatility
RTP sets the long-run cost. Volatility sets the ride. Blood Suckers pays small wins often, so a $50 session lasts. Gates of Olympus is built around rare, large multipliers, so long dry spells are normal even with a similar RTP. Match volatility to your budget, and read our RTP and volatility guide for the maths.
Do high-RTP slots help with bonuses?
They would, which is why casinos often exclude them. Bonus terms commonly list high-RTP and low-volatility games as excluded or reduced-weight. Check the excluded games list before you use one to clear a wagering requirement.
FAQ
Which slot has the highest RTP?
Among widely available slots, Ugga Bugga (Playtech, 99.07%) and Book of 99 (Relax Gaming, 99%) have the highest published figures. Your casino may run a lower version.
Does a 98% RTP slot mean I'll get 98% back?
Only on average over a very large number of spins. In a single session you can lose everything or win far more.
Are high-RTP slots allowed with bonuses?
Often not. Many casinos exclude high-RTP slots from bonus wagering or count them at a reduced rate. Check the bonus terms.