93 mmo games on Steam with co-op or multiplayer, ranked by how many people are playing right now and how well they review. Part of RPG.
Which of these do we both own? →
| Game | Modes | Type | Rating | Playing now | Price |
|---|---|---|---|---|---|
| Bongo Cat | Co-op, Single-player too | MMO | — | 164,168 | Free |
| FINAL FANTASY XIV Online | Co-op, PvP | MMO | 88% | 19,824 | $19.99 |
| Lost Ark | Co-op, PvP | MMO | 71% | 17,355 | Free |
| The Elder Scrolls® Online | Co-op, PvP | MMO | 81% | 15,987 | $19.99 |
| Black Desert | Co-op, PvP | MMO | 74% | 14,345 | $9.99 |
| IdleOn - The Incremental MMO | Co-op, Single-player too | MMO | 80% | 11,081 | Free |
| Fallout 76 | Co-op, PvP | MMO | 73% | 8,796 | $39.99 |
| Albion Online | PvP | MMO | 79% | 8,184 | Free |
| MapleStory | Co-op, Single-player too | MMO | 63% | 8,092 | Free |
| New World: Aeternum | Co-op, PvP | MMO | 69% | 5,583 | |
| STAR WARS™: The Old Republic™ | Co-op, PvP | MMO | 90% | 6,625 | Free |
| EVE Online | Co-op, PvP | MMO | 74% | 3,705 | Free |
| Guild Wars 2® | Co-op, PvP | MMO | 89% | 3,277 | Free |
| RuneScape ® | Online multiplayer | MMO | 83% | 2,496 | Free |
| Realm of the Mad God Exalt | Co-op | MMO | 83% | 1,853 | Free |
| Shakes and Fidget | Online multiplayer, Single-player too | MMO | 92% | 1,389 | Free |
| Phantasy Star Online 2 New Genesis | Co-op | MMO | 70% | 1,400 | Free |
| Knight Online | Online multiplayer, Single-player too | MMO | 50% | 1,421 | Free |
| Transformice | Online multiplayer | MMO | 88% | 1,284 | Free |
| Granado Espada | PvP | MMO | 64% | 1,313 | Free |
| Star Trek Online | Co-op | MMO | 79% | 1,057 | Free |
| Old School RuneScape | Online multiplayer | MMO | 83% | 1,050 | Free |
| Pantheon: Rise of the Fallen | Co-op, PvP | MMO | 76% | 876 | $39.99 |
| The Lord of the Rings Online™ | Co-op, PvP | MMO | 81% | 793 | Free |
| Neverwinter | Co-op, PvP | MMO | 78% | 665 | Free |
| The Quinfall | Co-op, PvP | MMO | 48% | 669 | $0.99 |
| DC Universe™ Online | Co-op, PvP | MMO | 81% | 546 | Free |
| Mabinogi | Co-op, Single-player too | MMO | 74% | 559 | Free |
| Tower of Fantasy | Co-op, PvP | MMO | 69% | 354 | Free |
| AdventureQuest 3D | Co-op, PvP | MMO | 82% | 160 | Free |
| Pax Dei | Co-op, PvP | MMO | 66% | 145 | $29.99 |
| Star Conflict | Co-op | MMO | 73% | 95 | Free |
| Metin2 | PvP | MMO | 70% | — | |
| Gloria Victis: Medieval MMORPG | Co-op, PvP | MMO | 68% | 1 | Free |
| Elite Dangerous: Arena | PvP | MMO | 47% | 1 | |
| Champions Online | Co-op | MMO | — | — | Free |
| EverQuest II | Online multiplayer | MMO | — | — | Free |
| The Front | Co-op, PvP | MMO | — | — | $19.99 |
| Where Winds Meet | Co-op, PvP | MMO | — | — | Free |
| RIFT | Co-op, PvP | MMO | — | — | Free |
| Warhammer 40,000: Eternal Crusade | Co-op, PvP | MMO | — | — | |
| Animal Jam | PvP | MMO | — | — | |
| Bit Heroes Quest | Co-op, Single-player too | MMO | — | — | Free |
| Bless Online | Co-op, PvP | MMO | — | — | |
| DK Online | Co-op, PvP | MMO | — | — | Free |
| Chicken Invaders Universe | Co-op | MMO | — | — | Free |
| Ragnarok Online | Online multiplayer, Single-player too | MMO | — | — | Free |
| NosTale - Anime MMORPG | Co-op, PvP | MMO | — | — | Free |
| LIZARDS MUST DIE | Co-op, Single-player too | MMO | — | — | $0.99 |
| Warspear Online | PvP | MMO | — | — | Free |
| 《蜀山：初章》买断版 | Co-op, PvP | MMO | — | — | $24.99 |
| Riders of Icarus | PvP, Single-player too | MMO | — | — | |
| Tree of Savior (English Ver.) | Online multiplayer | MMO | — | — | Free |
| King of Crabs | Co-op, PvP | MMO | — | — | Free |
| A.V.A Global | PvP | MMO | — | — | Free |
| Digimon Masters Online | Co-op, PvP | MMO | — | — | Free |
| Last Oasis | PvP | MMO | — | — | $29.99 |
| Cyber Hunter | Co-op, PvP | MMO | — | — | |
| Day of Dragons | Co-op, PvP | MMO | — | — | $19.99 |
| BLOCKADE | PvP | MMO | — | — | 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; updated 2026-09-08. Powered by Steam — not affiliated with or endorsed by Valve Corporation.