Ranked 61–71 of 71 sci-fi shooter games with co-op or multiplayer on Steam. Back to the most-played sci-fi shooter games.
| Game | Modes | Type | Rating | Playing now | Price |
|---|---|---|---|---|---|
| Allspace | PvP | Sci-fi shooter | 65% | — | $4.99 |
| SCHAR: Blue Shield Alliance | Co-op, Local / split-screen | Sci-fi shooter | 57% | — | $3.99 |
| Dark Data | Co-op, PvP | Sci-fi shooter | 93% | — | $6.99 |
| Anatomy of Fear | Co-op, Single-player too | Sci-fi shooter | 46% | — | $2.99 |
| Us Against Aliens | PvP, Single-player too | Sci-fi shooter | 67% | — | $1.99 |
| Nova Wing II | Co-op, Local / split-screen | Sci-fi shooter | 67% | — | $0.99 |
| CROSSFIRE II (AMIGA) | PvP, Local / split-screen | Sci-fi shooter | 100% | — | $3.99 |
| Tank Tactics - TDS | Co-op, PvP | Sci-fi shooter | 100% | — | $1.99 |
| Kitball 20000 | PvP, Local / split-screen | Sci-fi shooter | 100% | — | $2.99 |
| League Space | PvP | Sci-fi shooter | 0% | — | $11.99 |
| Halo: Campaign Evolved | Co-op, Single-player too | Sci-fi shooter | — | — | $49.99 |
Ready Up is a free tool: enter two Steam usernames and it lists the multiplayer games you both own, runs a bracket to pick one, and suggests new co-op games that fit how you both play. Ratings, tags and player counts from Steam and SteamSpy; page updated 2026-09-23. Powered by Steam — not affiliated with or endorsed by Valve Corporation or Microsoft. Ready Up is a Somebody Decide program. How the data works · Legal & privacy · All types · Game Pass