The greatest MMORPG studios of all time
Studios are how the genre actually happens. A designer supplies the philosophy, but keeping a world alive for twenty years takes an institution — live teams, server engineers, community managers, and the will to keep shipping expansions long after the launch reviews are archived. This list ranks the institutions.
The criteria mirror our developers ranking: invention, longevity, and reach — with extra weight on stewardship, because in this genre shipping is the easy part. Dead studios are eligible and well represented; the archive is where half the genre's history lives, and every entry links to a studio page that includes the worlds that closed.
- 1Sony Online Entertainment
10 games in the MMOlist database · 1998–2015
For the genre's formative fifteen years, SOE *was* the western MMORPG: EverQuest defined the 3D persistent world, Star Wars Galaxies remains the most-mourned sandbox ever shut down, and PlanetSide, EverQuest II, Free Realms, and DC Universe Online each expanded what 'massively multiplayer' could mean. No studio shipped more genre history — or taught more painful lessons, NGE included.
Now: Absorbed — continued as Daybreak Game Company
- 2Blizzard Entertainment
3 games in the MMOlist database · 1991–
World of Warcraft is the commercial event the genre is still measured against — the game that took the MMORPG from a hobbyist subculture to twelve million subscribers, and that two decades later still tops most-played charts through Classic and retail alike. One game, sustained for twenty years, is enough for second place.
Now: Still active — Irvine, California, US
- 3Origin Systems
2 games in the MMOlist database · 1983–2004
'We Create Worlds' wasn't a slogan, it was a roadmap. Origin's Ultima series built the vocabulary of the computer RPG, and Ultima Online proved a graphical persistent world could hold hundreds of thousands of paying citizens. EA closed the studio in 2004; its game is still running, which is its own verdict.
Now: Defunct since 2004
- 4NCSOFT
12 games in the MMOlist database · 1997–
The genre's most important company outside America. NCSOFT turned Lineage into a national industry, built Lineage II, Aion, and Blade & Soul into pillars of the eastern MMORPG, published Guild Wars and City of Heroes in the West, and is still launching new worlds — Throne and Liberty most recently — nearly thirty years in.
Now: Still active — Seongnam, South Korea
- 5Square Enix
4 games in the MMOlist database · 2003–
Two subscription MMORPGs, both still alive: Final Fantasy XI since 2002, and Final Fantasy XIV — whose A Realm Reborn rebirth is the genre's greatest turnaround and now one of its biggest games. Square Enix runs online worlds with a patience almost nobody else in the industry can afford.
Now: Still active — Tokyo, Japan
- 6Jagex
4 games in the MMOlist database · 2001–
RuneScape made the MMORPG free to start, playable anywhere, and culturally universal for a generation of players — and when that generation grew nostalgic, Jagex restored a 2007 backup by referendum and built Old School RuneScape into one of the most-played MMORPGs on Earth. Player governance at that scale is a Jagex invention.
Now: Still active — Cambridge, UK
- 7Fenris Creations
4 games in the MMOlist database · 1997–
One shard, twenty-three years. EVE Online's single-universe design produced the deepest player-run economy, politics, and warfare in gaming — events with real headlines and real historians. CCP picked the hardest possible version of the genre and simply never blinked.
Now: Still active — Reykjavík, Iceland
- 8Mythic Entertainment
1 game in the MMOlist database · 1995–2014
Dark Age of Camelot's realm-vs-realm warfare is among the genre's few true structural inventions, and Mythic's alumni network — Broadsword, ZeniMax Online's leadership, Camelot Unchained — has carried its DNA into three more decades of games. Closed by EA in 2014; outlived by its ideas and, via Broadsword, its games.
Now: Defunct since 2014
- 9ArenaNet
3 games in the MMOlist database · 2000–
Founded by Battle.net's creators, ArenaNet has spent twenty years attacking the genre's business model: Guild Wars made buy-to-play work when subscriptions were gospel, and Guild Wars 2's living world and horizontal progression built the genre's most alt-and-life-friendly big MMO.
Now: Still active — Bellevue, Washington, US
- 10Turbine
2 games in the MMOlist database · 1994–2016
A founding studio twice over: Asheron's Call was there at the genre's birth with monthly content updates before 'live service' had a name, and The Lord of the Rings Online carried the biggest license in fantasy into a persistent world respectfully enough that it's still running — under Turbine's own successor, Standing Stone Games.
Now: Absorbed — continued as Standing Stone Games
Every profile above is sourced and dated — see the Hall of Fame or browse all studios.
More: Greatest MMO developers