#1HighBest Space Slots 2026
Our pick of the best space slots from every major studio, with free demos and full stats.
We currently list 26 space slots from 7 studios, led by BGaming (8), Thunderkick (5) and Nolimit City (4). Across the 23 games with a published RTP, the average is 96.29%. Alien Fruits 2 has the highest at 97.17%, while Xterminate is lowest at 94.12%. Max wins range from 500x up to 80,000x on Brute Force: Alien Onslaught. Of the 19 games with a provider volatility rating, the most common ratings are very high (32%), high (26%) and low (11%). 10 of them (38%) offer a bonus buy where it is legal.
26 slots match this list. Rankings use our editorial review score and the published game data; they are not paid placements.
#1High
#2LowStarburst
#3Very highBrute Force: Alien Onslaught
#4Very highXterminate
#5HighAlien Fruits
#6Fire my Laser
#7HighSpace Donkey
#8MediumFruit Warp
#9Very highAlways Up! x10000
#10Medium-highAlien Fruits 3
#11Medium-highStar Trek: The Next Generation
#12Gravity Bonanza
Full comparison
| # | Slot | Provider | RTP | Volatility | Max win |
|---|---|---|---|---|---|
| 1 | Reactoonz | Play'n GO | 96.51% | High | 4,570x |
| 2 | Starburst | NetEnt | 96.09% | Low | 500x |
| 3 | Brute Force: Alien Onslaught | Nolimit City | 96.01% | Very high | 80,000x |
| 4 | Xterminate | Thunderkick | 94.12% | Very high | 25,000x |
| 5 | Alien Fruits | BGaming | 95.97% | High | 15,000x |
| 6 | Fire my Laser | Hacksaw Gaming | Not published | Not published | 15,000x |
| 7 | Space Donkey | Nolimit City | 96.07% | High | 14,649x |
| 8 | Fruit Warp | Thunderkick | 97.00% | Medium | 11,000x |
| 9 | Always Up! x10000 | BGaming | 96.05% | Very high | 10,490x |
| 10 | Alien Fruits 3 | BGaming | 97.00% | Medium-high | 10,000x |
| 11 | Star Trek: The Next Generation | BGaming | 96.46% | Medium-high | 10,000x |
| 12 | Gravity Bonanza | Pragmatic Play | 96.09% | Not published | 10,000x |
| 13 | Jaws of Justice | Hacksaw Gaming | Not published | Not published | 10,000x |
| 14 | Munchy Milo | Hacksaw Gaming | Not published | Not published | 10,000x |
| 15 | Milky Ways | Nolimit City | 96.14% | Medium | 5,664x |
| 16 | Alien Invaders | Pragmatic Play | 96.50% | Not published | 5,000x |
| 17 | Wild Clusters | BGaming | 96.71% | Very high | 5,000x |
| 18 | Wild Moon Thieves | BGaming | 97.00% | Medium-low | 5,000x |
| 19 | Alien Fruits 2 | BGaming | 97.17% | Very high | 5,000x |
| 20 | OOF The Goldmine Planet | BGaming | 97.00% | Medium-low | 5,000x |
| 21 | Cosmic Voyager | Thunderkick | 96.14% | Very high | 5,000x |
| 22 | Zap Attack! | Thunderkick | 96.15% | High | 5,000x |
| 23 | Tractor Beam | Nolimit City | 96.01% | High | 3,408x |
| 24 | Arcader | Thunderkick | 96.10% | Low | 1,600x |
| 25 | Rocket Blast Megaways | Pragmatic Play | 96.01% | Not published | Not published |
| 26 | Starz Megaways | Pragmatic Play | 96.48% | Not published | Not published |
Our top picks explained
1. Reactoonz – Play'n GO
Reactoonz has no traditional free spins – its features trigger from a charge meter that fills with every winning cluster. That design keeps the base game busy, and the Gargantoon feature is still one of the most enjoyable moments in any cluster slot. It remains one of Play'n GO's best games years after release.
96.51% RTP · High volatility · 4,570x max win
2. Starburst – NetEnt
Starburst is a deliberately low volatility game: frequent small wins, a single expanding-wild respin feature and a 500x cap. It's still useful as a reference point for what "low volatility" actually feels like, and its presentation remains clean and readable.
96.09% RTP · Low volatility · 500x max win
3. Brute Force: Alien Onslaught – Nolimit City
Brute Force: Alien Onslaught is a 6x5 sci-fi sequel with four kinds of stacked xNudge Wilds. Most of them show a random multiplier at the bottom when they nudge into view, and ordinary wilds upgrade every low symbol on their reel to a mid-tier symbol.
96.01% RTP · Very high volatility · 80,000x max win
4. Xterminate – Thunderkick
Xterminate is a 5x6 sci-fi slot with scatter-pay wins, the Xterminate multiplier and charged wilds.
94.12% RTP · Very high volatility · 25,000x max win
5. Alien Fruits – BGaming
Alien Fruits is a sci-fi spin on the Bonanza engine, starring five quirky fruit characters (avocado, plum, pomegranate, lemon and passionfruit) visiting from another planet. Refilling reels let wins chain together, and the fruits' flying ship is the scatter.
95.97% RTP · High volatility · 15,000x max win
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Frequently asked questions
Which space slot has the highest RTP?
Alien Fruits 2 by BGaming has the highest published RTP in this list at 97.17%. Casinos can run lower RTP versions, so check the in-game info screen.
Which space slot has the biggest max win?
Brute Force: Alien Onslaught has the biggest published max win here at 80,000x your stake. Wins of that size are extremely rare.
Which provider makes the most space slots?
BGaming has the most games in this list (8 of 26), followed by Thunderkick (5).
What is the newest space slot?
The most recent release in this list is Alien Fruits 3 by BGaming.
Can I play space slots for free?
Yes. 25 of the 26 games in this list can be played in the provider's official demo with play money – no sign-up or deposit needed.