76 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 (39) · Open world adventure (33) · Pirate adventure (4)
| 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 |
| Cyberpunk 2077 | Co-op, Single-player too | Open world adventure | 84% | 22,265 | $59.99 |
| 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 |
| Just Cause™ 3 | Co-op, PvP | Open world adventure | 84% | 639 | $19.99 |
| Grand Theft Auto IV: Complete Edition | Online multiplayer, Single-player too | Crime & open world | 82% | — | |
| Grand Theft Auto: San Andreas | Co-op, PvP | Crime & open world | 92% | 363 | |
| 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 |
| 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 |
| Grand Theft Auto: Vice City | Co-op, PvP | Crime & open world | 93% | 113 | |
| 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 |
| 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 |
| Drug Dealer Simulator 2 | Co-op, Single-player too | Crime & open world | 56% | 145 | $24.99 |
| Need for Speed™ Hot Pursuit Remastered | Online multiplayer, Single-player too | Crime & open world | 81% | 116 | $29.99 |
| LEGO® City Undercover | Online multiplayer, Local / split-screen | Crime & open world | 91% | 115 | $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 |
| Party Hard | Co-op, Local / split-screen | Crime & open world | 90% | 39 | $9.99 |
| The Break-In | Co-op, Single-player too | Crime & open world | 89% | 74 | $19.99 |
| Dead Rising 4 | PvP, Single-player too | Crime & open world | 57% | 46 | $5.99 |
| 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 |
| Mini Thief | Co-op, PvP | Crime & open world | 61% | 52 | $0.79 |
| Grand Theft Auto: Episodes from Liberty City | Online multiplayer, Single-player too | Crime & open world | 74% | — | |
| Monaco: What's Yours Is Mine | Co-op, PvP | Crime & open world | 91% | 6 | $14.99 |
| Age of Water | Co-op, PvP | Pirate adventure | 71% | 34 | $29.99 |
| 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 |
| Crime Simulator: Playgrounds | Co-op, Single-player too | Crime & open world | 74% | 23 | $1.99 |
| The Greatest Penguin Heist of All Time | Co-op, PvP | Crime & open world | 90% | 15 | $14.99 |
| ELYON | Co-op, PvP | Open world adventure | 54% | — | |
| Police Simulator: Patrol Duty | Co-op, Single-player too | Crime & open world | 52% | — | |
| Just Another Night Shift | PvP | Crime & open world | 92% | 17 | $6.99 |
| StarMade | Co-op, PvP | Open world adventure | 68% | 2 | $14.99 |
| Sneak Thief | Co-op, PvP | Crime & open world | 74% | 4 | $14.99 |
| RIOT: Civil Unrest | Co-op, PvP | Crime & open world | 69% | 3 | $16.99 |
| Downtown Mafia: Gang Wars | PvP, Single-player too | Crime & open world | 68% | 11 | Free |
| Interstellar Rift | Co-op, PvP | Open world adventure | 69% | 3 | $19.99 |
| Eden Rising | Co-op, PvP | Open world adventure | 64% | 1 | Free |
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