A genre with broad appeal, space slots are built around galaxies, planets and cosmic journeys. Our index currently tracks 39 space slots from a range of studios, with an average RTP of around 95.45%. Below you will find what defines the genre and the top titles ranked by RTP.
Why space slots are popular
The space theme gives studios a strong visual identity and a natural hook for bonus features. It appeals to players who enjoy a clear sense of place and story while they spin.
Best space slots by RTP
The table lists the highest-RTP space slots we track, with the studio behind each title.
| Game | Studio | RTP | Volatility |
|---|---|---|---|
| Starsign Clusters | G Games | 97.5% | Low |
| Galaxy Miner | PGSoft | 96.77% | High |
| Galactic Gems | PGSoft | 96.74% | Medium |
| Event Horizon | Betsoft | 96.51% | High |
| 9 Planet Shockers | Boldplay | 96.39% | Medium |
| Coins of Cosmic Critters | Betsoft | 96.16% | High |
| CritterPop | AvatarUX | 96.14% | High |
| Jellyens X | Popiplay | 96.11% | High |
| AstroPop | AvatarUX | 96.034% | High |
| Triple Cash or Crash | Betsoft | 96% | High |
Common features
You will often see scatter pays, sticky wilds, pick-bonuses and theme-led jackpot features. Volatility varies widely, so check each game’s profile before you play.
Frequently asked questions
How many space slots are there?
Our index currently lists 39 space slots.
What is the highest-RTP space slot?
Among the titles we track, Starsign Clusters leads with an RTP of 97.5%.
