29 open world action games on Steam with co-op or multiplayer, ranked by how many people are playing right now and how well they review.
Narrow it down: Crime & open world (13) · Open world adventure (13) · Pirate adventure (3)
Which of these do we both own? →
| Game | Modes | Type | Rating | Playing now | Price |
|---|---|---|---|---|---|
| Grand Theft Auto V Legacy | Co-op, PvP | Crime & open world | 87% | 67,851 | |
| Grand Theft Auto V Enhanced | Co-op, PvP | Crime & open world | 69% | 39,502 | $19.79 |
| Red Dead Redemption 2 | Co-op, PvP | Open world adventure | 92% | 29,885 | $14.99 |
| Schedule I | Co-op, Single-player too | Crime & open world | 98% | 22,757 | $19.99 |
| Sea of Thieves: 2026 Edition | Co-op, PvP | Pirate adventure | 89% | 5,437 | $39.99 |
| Grand Theft Auto IV: The Complete Edition | Online multiplayer, Single-player too | Crime & open world | 82% | 2,122 | $19.99 |
| 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 |
| Assassin’s Creed® IV Black Flag™ | Online multiplayer, Single-player too | Pirate adventure | 89% | 923 | $39.99 |
| Watch_Dogs® 2 | Co-op, Single-player too | Crime & open world | 83% | 863 | $49.99 |
| Grand Theft Auto IV: Complete Edition | Online multiplayer, Single-player too | Crime & open world | 82% | — | |
| Assassin's Creed® Unity | Co-op, Single-player too | Open world adventure | 78% | 373 | $29.99 |
| A Way Out | Co-op, Local / split-screen | Crime & open world | 88% | 262 | $29.99 |
| Watch_Dogs™ | Online multiplayer, Single-player too | Crime & open world | 78% | 388 | $19.99 |
| Saints Row: The Third | Co-op, Single-player too | Crime & open world | 96% | 163 | $2.49 |
| LEGO® Marvel™ Super Heroes | Online multiplayer, Local / split-screen | Open world adventure | 95% | 298 | $19.99 |
| 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 |
| Skull and Bones | Co-op, PvP | Pirate adventure | 68% | 246 | $29.99 |
| Watch Dogs®: Legion | Co-op, PvP | Crime & open world | 57% | 197 | $59.99 |
| Assassin's Creed® Revelations | Online multiplayer, Single-player too | Open world adventure | 85% | 104 | $19.99 |
| Need for Speed™ Hot Pursuit Remastered | Online multiplayer, Single-player too | Crime & open world | 81% | 116 | $29.99 |
| 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 | |
| Grand Theft Auto: Episodes from Liberty City | Online multiplayer, Single-player too | Crime & open world | 74% | — | |
| Red Faction Guerrilla Steam Edition | Online multiplayer, Single-player too | Open world adventure | 90% | 5 | |
| Grand Theft Auto | Online multiplayer, Single-player too | Crime & open world | 84% | 1 |
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; updated 2026-09-08. Powered by Steam — not affiliated with or endorsed by Valve Corporation.