33 open world adventure games on Steam with co-op or multiplayer, ranked by how many people are playing right now and how well they review. Part of Open world action.
| Game | Modes | Type | Rating | Playing now | Price |
|---|---|---|---|---|---|
| Red Dead Redemption 2 | Co-op, PvP | Open world adventure | 92% | 29,885 | $14.99 |
| Cyberpunk 2077 | Co-op, Single-player too | Open world adventure | 84% | 22,265 | $59.99 |
| Red Dead Online | Co-op, PvP | Open world adventure | 83% | 2,207 | $19.99 |
| Ghost of Tsushima DIRECTOR'S CUT | Co-op, PvP | Open world adventure | 94% | 2,025 | $59.99 |
| METAL GEAR SOLID V: THE PHANTOM PAIN | Online multiplayer, Single-player too | Open world adventure | 92% | 1,333 | $17.99 |
| Just Cause™ 3 | Co-op, PvP | Open world adventure | 84% | 639 | $19.99 |
| Assassin's Creed® Unity | Co-op, Single-player too | Open world adventure | 78% | 373 | $29.99 |
| LEGO® Marvel™ Super Heroes | Online multiplayer, Local / split-screen | Open world adventure | 95% | 298 | $19.99 |
| Just Cause 2 | Co-op, PvP | Open world adventure | 91% | 90 | $14.99 |
| Avatar: Frontiers of Pandora™ | Co-op, Single-player too | Open world adventure | 69% | 272 | $29.99 |
| Assassin’s Creed® Brotherhood | Online multiplayer, Single-player too | Open world adventure | 89% | 169 | $19.99 |
| Dead Rising 3 Apocalypse Edition | Co-op, Single-player too | Open world adventure | 77% | 136 | $5.99 |
| Assassin's Creed® Revelations | Online multiplayer, Single-player too | Open world adventure | 85% | 104 | $19.99 |
| LEGO® Marvel Super Heroes 2 | Co-op, Local / split-screen | Open world adventure | 87% | 144 | $19.99 |
| LEGO® MARVEL's Avengers | Online multiplayer, Local / split-screen | Open world adventure | 88% | 97 | $19.99 |
| LEGO® Batman™ 3: Beyond Gotham | Online multiplayer, Local / split-screen | Open world adventure | 89% | 76 | $19.99 |
| Amazing Frog? | Co-op, PvP | Open world adventure | 94% | 65 | $19.99 |
| Dead Rising® 2 | Co-op, Single-player too | Open world adventure | 78% | 64 | $19.99 |
| Assassin’s Creed® III | Online multiplayer, Single-player too | Open world adventure | 74% | 14 | |
| DYNASTY WARRIORS 9 | Co-op, Local / split-screen | Open world adventure | 35% | 29 | $44.99 |
| Saints Row: Gat out of Hell | Co-op, Single-player too | Open world adventure | 75% | 10 | $14.99 |
| Dead Rising 2: Off the Record | Co-op, Single-player too | Open world adventure | 77% | 25 | $4.99 |
| Red Faction Guerrilla Steam Edition | Online multiplayer, Single-player too | Open world adventure | 90% | 5 | |
| Bang-On Balls: Chronicles | Co-op, Local / split-screen | Open world adventure | 96% | 17 | $24.99 |
| ELYON | Co-op, PvP | Open world adventure | 54% | — | |
| StarMade | Co-op, PvP | Open world adventure | 68% | 2 | $14.99 |
| Interstellar Rift | Co-op, PvP | Open world adventure | 69% | 3 | $19.99 |
| Eden Rising | Co-op, PvP | Open world adventure | 64% | 1 | Free |
| The Infinite Black 2 | Co-op, PvP | Open world adventure | 86% | 5 | $6.99 |
| Home Legacy | Online multiplayer | Open world adventure | 38% | 1 | Free |
| Unbox: Newbie's Adventure | PvP, Local / split-screen | Open world adventure | 83% | — | $19.99 |
| Isles of Yore | PvP | Open world adventure | 70% | — | $19.99 |
| Realm of Cubes | Co-op, Local / split-screen | Open world adventure | 64% | — | $3.99 |
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