Best Sci-fi Games on Steam (2026)
Every game on the site tagged Sci-fi on Steam, ranked by popularity and current follower momentum.
Updated daily · June 29, 2026
The best Sci-fi games on Steam right now are Stellaris, No Man's Sky, PRAGMATA. We rank every game carrying the Sci-fi Steam tag by a popularity-and-momentum blend — total Steam reviews, follower count and 24-hour peak players, with extra weight for 7-day Steam follower growth so currently-rising games surface higher. 19 Sci-fi games tracked, updated June 29, 2026.
| # | Game | Reviews | 24h Peak | 7d Growth | Similar |
|---|---|---|---|---|---|
| 1 | Stellaris ▲ | 86% (102,583) | 14,471 | +1,048 | similar → |
| 2 | No Man's Sky | 83% (225,629) | 18,197 | — | similar → |
| 3 | PRAGMATA ▲ | — | 2,605 | +932 | similar → |
| 4 | Jump Space | 88% (7,032) | 433 | +211 | similar → |
| 5 | Marathon | 85% (1,666) | — | +367 | similar → |
| 6 | SpaceEngine | 96% (8,789) | 262 | +212 | similar → |
| 7 | SpaceCraft ▲ | — | — | +1,225 | similar → |
| 8 | Space Engineers 2 | 76% (2,809) | 300 | +234 | similar → |
| 9 | THE LIFT: Supernatural Handyman Simulator | — | — | +271 | similar → |
| 10 | Space Scum | — | — | +190 | similar → |
| 11 | Cronos: The New Dawn | 88% (4,906) | 389 | — | similar → |
| 12 | Calyx | 94% (164) | 81 | — | similar → |
| 13 | Truckful | — | — | — | similar → |
| 14 | Silent Planet - Elegy of a Dying World | — | — | — | similar → |
| 15 | ONTOS | — | — | — | similar → |
| 16 | Donutal | — | — | — | similar → |
| 17 | Crimson Freedom | — | — | — | similar → |
| 18 | Aphelion | — | — | — | similar → |
| 19 | Altered Alma | — | — | — | similar → |
19 Sci-fi games tracked · 9 currently gaining Steam followers · data via Steam & SteamDB · all tags · trending by genre · all trending games →