| Title | Status | Developer | Publisher | Country of Origin | Design Methodology | Genre | Payment Structure | Release Date |
|---|---|---|---|---|---|---|---|---|
| 2Moons | Released | GameHi | Acclaim | America | Diku | Fantasy | Free to Play / Micro | 2007.07.30 |
| 4th Coming, The | Released | Dialsoft | Dialsoft | America | Sandbox | Fantasy | Server License / Free to Play | 1999.05.14 |
| 7Million | Open Beta | Deep Silver | Cliffhanger Productions | Austria | Sandbox | Modern / Heist | Unknown | |
| 9Dragons | Released | Indy21 | Acclaim | Korea | Diku | Chinese Myth | Free to Play / Micro | 2009.02.12 |
| A Tale in the Desert 4 | Released | eGenesis | eGenesis | America | Sandbox | Slavery | Subscription | 2008.12.13 |
| ACE Online | Released | MasangSoft | Suba Games | Korea | Diku | Sci-Fi | Free to Play / Micro | 2006.05.26 |
| Adellion | Closed Beta | Honourbound | Alchemic Dream | Canada | Diku | Fantasy | Unknown | |
| Age of Armor | Released | Snail Game | Snail Game | China | Diku | Sci-Fi | Free to Play / Micro | 2007.10.20 |
| Age of Conan | Released | Funcom | Eidos | Norway | Diku | Fantasy | Subscription | 2008.05.20 |
| Agency, The | Alpha | SOE Seattle | SCEA | America | Unknown | Modern | Subscription | |
| Aion | Released | NCSoft | NCSoft | Korea | Diku | Fantasy | Subscription | 2009.09.22 |
| Allods | Nival Online | gPotato | Russia | Diku | Fantasy | Free to Play / Micro | ||
| All Points Bulletin | Alpha | Realtime Worlds | Electronic Arts | Scotland | Unknown | Modern / Crime | Unknown | |
| Anarchy Online | Released | Funcom | Funcom | Norway / America | Diku | Sci-Fi | Free (Limited) / Subscription | 2001.06.27 |
| Angels Online | Released | UserJoy | IGG | Taiwan | Diku | Fantasy / Good vs. Evil | Free to Play / Micro | 2007.12.10 |
| ArchLord | Released | NHN Games | Codemasters | Korea | Diku | Fantasy | Free to Play / Micro | 2006.10.03 |
| Asda Story | Released | MaxOn Soft | OnNET USA | Korea | Diku | Fantasy | Free to Play / Micro | 2008.08.05 |
| Ashen Empires | Released | Iron Will Games | Iron Will Games | America | Sandbox | Fantasy | Free to Play / Micro | 2003.03.10 |
| Asheron's Call | Released | Turbine | Turbine | America | Diku | Fantasy | Subscription | 1999.11.02 |
| Astonia III | Released | Intent Software | Intent Software | America | Sandbox | Fantasy | Subscription | 2002.03.18 |
| Atlantica | Released | NDOORS | NDOORS | Korea | Diku / TBS | Fantasy | Free to Play / Micro | 2008.10.30 |
| Atriarch | Beta | World Fusion | World Fusion | America | Diku | Fantasy | Unknown | |
| Bounty Bay Online | Released | Suzhou Snail | Frogster | Japan | Diku | Historical | Free to Play / Micro | 2007.09.14 |
| Cabal Online | Released | ESTsoft | Games-Masters | Korea | Diku | Fantasy | Free to Play / Micro | 2008.02.01 |
| Champions Online | Closed Beta | Cryptic | Atari | America | Diku | Super Hero | Subsciption | |
| Chaos Online | Released | Ingle Games | Ingle Games | China | Diku | Fantasy | Free to Play / Micro | 2008.04.24 |
| Chronicles of Spellborn, The | Released | Spellborn International | Acclaim | Denmark | Diku | Fantasy | Free (limited) / Subscription | 2009.04.23 |
| Citadel of Sorcery | Alpha | MMO Magic | Unknown | America | Diku | Fantasy | Unknown | |
| City of Heroes | Released | NCSoft | NCSoft | America | Diku | Super Hero | Subscription | 2004.04.28 |
| City of Villains | Released | NCSoft | NCSoft | America | Diku | Super Hero | Subscription | 2005.10.28 |
| Clan Lord | Released | Delta Tao | Delta Tao | America | Diku | Fantasy | Free to Play | 1998.12.31 |
| Conquer Online | Released | NetDragon Websoft | NetDragon Websoft | China | Diku | Fantasy | Free to Play / Micro | 2004.11.14 |
| Corum Online | Released | NetTimeSoft | Gala-Net | Korea | Diku | Fantasy | Free to Play / Micro | 2007.02.15 |
| CrimeCraft | Released | Vogster Entertainment | THQ | America | Diku / FPS | Modern | Free to Play / Micro | 2009.08.25 |
| Cronous | Released | Lizard Interactive | Lizard Interactive | Korea | Diku | Fantasy | Free to Play / Micro | 2004.10.04 |
| Daimonin | Released | Michael Toennies | Michael Toennies | Germany | Diku | Fantasy | Free to Play / Micro | 2002.12.01 |
| Dark Age of Camelot | Released | EA Mythic | EA Mythic | America | Diku | Fantasy | Subscription | 2001.10.10 |
| Dark Ages | Released | KRU Interactive | KRU Interactive | America | Diku | Fantasy | Free to Play / Micro | 1999.08.02 |
| Dark and Light | Released | NPCube | NPCube | Re | Diku | Fantasy | Free Until Further Notice | 2006.06.30 |
| Darkfall | Released | Aventurine | Aventurine | Greece | Diku / Sandbox | Fantasy | Subscription | 2009.02.25 |
| DarkSpace | Released | Palestar | Palestar | America | Diku | Sci-Fi | Subscription | 2001.12.21 |
| Darkwind: War on Wheels | Released | Psychic Software | Psychic Software | America | Diku / TBS | Post-Apocolyptic | Free (Limited) / Subscription | 2007.05.03 |
| DC Universe | Alpha | SOE Austin | Sony Online Entertainment | America | Diku | Super Hero | Subscription | |
| Deco Online | Released | Rocksoft | Joymax | Singapore | Diku | Fantasy | Free to Play / Micro | 2007.07.18 |
| Deicide | Released | Inn Soft | Ongameport | Korea | Diku | Fantasy | Free to Play / Micro | 2006.08.11 |
| Dekaron | Released | GameHi | Game Tribe | Korea | Diku | Fantasy | Free to Play / Micro | 2008.05.19 |
| Destiny Online | Released | Net Game Digital Technology | Ingle Games | Vietnam | Diku | Fantasy | Free to Play / Micro | 2009.01.13 |
| Divergence | Alpha | Stainglass Llama | Unknown | America | Diku | Sci-Fi | Unknown | |
| Dofus | Released | Ankama Games | Ankama Games | France | Diku / TBS | Fantasy | Free (Limited) / Subscription | 2005.09.01 |
| Dragonica | Open Beta | Barunson Interactive | IAH Games | Korea | Diku / Side Scrolling | Fantasy | Free to Play / Micro | 2009.06.10 |
| Dream of Mirror Online | Released | Softstar Entertainment | Aeria Games | Taiwan | Diku | Fantasy | Free to Play / Micro | 2007.11.12 |
| Dreamlords | Released | Lockpick Entertainment | Lockpick Entertainment | Sweden | TBS | Fantasy | Free to Play | 2007.02.15 |
| Dungeon Runners | Released | NCSoft Austin | NCSoft | America | Diku | Fantasy | Free (Limited) / Subscription | 2007.05.24 |
| Dungeons & Dragons Online | Released | Turbine | Atari | America | Diku | Fantasy | Free (Limited) / Subscription | 2006.02.28 |
| Earthrise | Alpha | Masthead Studios | Masthead Studios | Bulgaria | Diku | Sci-Fi | Subscription | |
| Elf Online | Released | HappyMMO | HappyMMO | China | Diku | Fantasy | Free to Play / Micro | 2007.12.21 |
| Endless Ages | Released | Digital Motion Entertainment | Digital Motion Entertainment | America | Diku | Sci-Fi | Free to Play | 2003.07.01 |
| Endless Online | Released | Vult-R | Vult-R | Netherlands | Diku | Fantasy | Free to Play | 2002.08.31 |
| Entropia Universe | Released | Mindark | Mindark | Sweden | Diku | Sci-Fi | Free to Play / Micro | 2003.01.30 |
| Eternal Lands | Open Beta | Entropy | Network Studio | America | Diku | Fantasy | Free to Play / Micro | |
| Ether Saga Online | Released | Perfect World Entertainment | Perfect World Entertainment | America | Diku | Fantasy | Free to Play / Micro | 2009.03.17 |
| Eudemons Online | Released | NetDragon Websoft | TQ Digital Games | China | Diku | Fantasy | Free to Play / Micro | 2006.12.31 |
| EVE Online | Released | CCP Games | CCP Games | Iceland | Sandbox | Sci-Fi | Subscription | 2003.05.06 |
| EverQuest | Released | SOE San Diego | Sony Online Entertainment | America | Diku | Fantasy | Subscription / Micro (Select Servers) | 1999.03.16 |
| EverQuest II | Released | SOE San Diego | Sony Online Entertainment | America | Diku | Fantasy | Subscription / Micro (Select Servers) | 2004.11.08 |
| EverQuest Online Adventures | Released | SOE San Diego | Sony Online Entertainment | America | Diku | Fantasy | Subscription | 2003.02.11 |
| Face of Mankind | Closed Beta | Duplex Systems / Nexeon | Duplex Systems / Nexeon | Germany | Diku | Dark Reality | Free (Limited) / Subscription | |
| Fairyland Online | Released | Lager Network Technologies | Lager Network Technologies | Taiwan | Diku | Fantasy | Free to Play / Micro | 2007.11.01 |
| Fallen Earth | Released | Icarus Studios | Icarus Studios | America | Diku | Post-Apocalyptic | Subscription | 2009.08.17 |
| Fiesta Online | Released | Ons On Soft | Outspark | Korea | Diku | Fantasy | Free to Play / Micro | 2008.10.30 |
| Final Fantasy XI | Released | Square Enix | Square Enix | Japan | Diku | Fantasy | Subscription | 2003.10.28 |
| Final Fantasy XIV | Alpha | Square Enix | Square Enix | Japan | Diku | Fantasy | Subscription | |
| Florensia | Released | NETTS Corp | Burda:ic GmbH | Japan | Diku | Fantasy | Free to Play / Micro | 1999.11.30 |
| Flyff | Released | Aeonsoft | gPotato | Korea | Diku | Fantasy | Free to Play / Micro | 2005.06.01 |
| Football SuperStars | Released | CyberSports | CyberSports | England | Diku | Fantasy | Free to Play | 2008.12.31 |
| Force of Arms | Alpha | Wardog Studios | Multiverse | America | Diku | Sci-Fi / Shooter | Subscription | |
| FreeRealms | Released | SOE San Diego | Sony Online Entertainment | America | Diku | Fantasy | Free (Limited) / Subscription | 2009.04.29 |
| FreeWorld | Alpha | Net Charger | MindSurge Entertainment | United Kingdom | Diku | Fantasy | Subscription | |
| Furcadia | Released | Dragon's Eye Productions | Dragon's Eye Productions | America | Diku | Fantasy | Free to Play / Micro | 1996.12.16 |
| Fusion Fall | Released | Grigon Entertainment | Cartoon Network | Korea | Diku | Sci-Fi | Free (Limited) / Subscription | 2009.01.14 |
| Gekkeiju Online | Released | Coolhouse | Coolhouse | Finland | Diku | Fantasy | Free to Play | 2007.07.20 |
| Ghost Online | Released | NNG | MGame | Korea | Diku | Fantasy | Free to Play / Micro | 2008.07.08 |
| Global Agenda | Closed Beta | Hi-Rez Studios | Hi-Rez Studios | Georgia | Diku | Sci-Fi / Shooter | Subscription | |
| GodsWar Online | Released | IGG | IGG | China | Diku | Fantasy | Free to Play / Micro | 2009.08.05 |
| Guild Wars | Released | ArenaNet | NCSoft | America | Diku | Fantasy | Free to Play | 2005.04.28 |
| Guild Wars 2 | Alpha | ArenaNet | NCSoft | America | Diku | Fantasy | Free to Play | |
| Habbo Hotel | Released | Sulake | Sulake | Finland | Sandbox | Modern | Free to Play / Micro | 2004.09 |
| Helbreath | Released | SiemenTech | iEntertainment | Korea | Diku | Fantasy | Subscription / Micro | 2003.02.02 |
| Hello Kitty Online | Open Beta | Sanrio | Sanrio | Japan | Diku | Fantasy | Free to Play / Micro | |
| Hero Online | Released | MGame | MGame | Korea | Diku | Fantasy | Free to Play / Micro | 2006.07.31 |
| Hero's Journey | Alpha | Simutronics | Simutronics | America | Diku | Fantasy | Subscription | |
| Heroes of Telara | Alpha | Trion World Network Inc. | Trion World Network Inc. | America | Diku | Fantasy | Unknown | |
| Holic Online | Released | MGame | MGame | Korea | Diku | Fantasy | Free to Play / Micro | 2006.11.28 |
| Hostile Space | Released | InterAdventure | InterAdventure | America | Diku | Fantasy | Free to Play | 2001 |
| Huxley | Closed Beta | Webzen | NHN USA | Korea | Diku | Sci-Fi / Shooter | Free to Play / Micro | |
| Illutia | Released | Crazed Monkeys | Crazed Monkeys | America | Diku | Fantasy | Free to Play / Donation | 2005.06 |
| Immortals | Released | HGI Games | AWTI Games | Singapore | Diku | Fantasy | Free to Play / Micro | 2009.02.11 |
| Infinity | Released | ARN Gamez | GameTribe | Korea | Diku | Fantasy | Free to Play / Micro | 2006.10.12 |
| Infinity: The Quest for Earth | Alpha | F. Brebion | F. Brebion | America | Diku | Sci-Fi | Unknown | |
| Irth Worlds | Released | Magic Hat Software | Magic Hat Software | America | Diku | Fantasy | Free to Play | 2005.11.01 |
| Istaria: Chronicles of the Gifted | Released | Virtrium | Virtrium | America | Diku | Fantasy | Subscription | 2003.12.09 |
| Jumpgate | Released | NetDevil | NetDevil | America | Diku | Sci-Fi | Subscription | 2001.09.25 |
| Jumpgate Evolution | Alpha | NetDevil | Codemasters | America | Diku | Sci-Fi | Subscription | |
| Kaos War | Alpha | Shattered Reality Interactive | Shattered Reality Interactive | America | Diku | Sci-Fi | Unknown | |
| Kicks Online | Released | Entermate | GameTribe | Korea | Diku | Sports | Free to Play | 2007.11.06 |
| Kingdom of Drakkar | Released | Drakkar | Drakkar | America | Diku | Fantasy | Free (Limited) / Subscription | 2002.07.04 |
| Last Chaos | Released | T-Entertainment | Aeria Games | Korea | Diku | Fantasy | Free to Play / Micro | 2006.11.20 |
| Legend of Ares, The | Released | MGame | MGame | Korea | Diku | Fantasy | Free to Play / Micro | 2007.12.31 |
| Lego Universe | Alpha | NetDevil | NetDevil | America | Diku | Fantasy | Subscription | |
| Lineage | Released | NCSoft | NCSoft | Korea | Diku | Fantasy | Subscription | 1998.09.03 |
| Lineage 2 | Released | NCSoft | NCSoft | Korea | Diku | Fantasy | Subscription | 2004.04.27 |
| Lord of the Rings Online | Released | Turbine | Turbine | America | Diku | Fantasy | Subscription | 2007.04.24 |
| Luminary | Released | NDOORS | NHN USA | Korea | Diku | Fantasy | Free to Play / Micro | 2008.09.18 |
| Lunia | Released | All-M | NHN USA | Korea | Diku | Fantasy | Free to Play / Micro | 2008.02.18 |
| Mabinogi | Released | DevCAT | Nexon | Korea | Diku | Fantasy | Free to Play / Micro | 2008.03.27 |
| Magic World Online | Released | Goldcool | Ingle Games | Korea | Diku | Fantasy | Free to Play / Micro | 2009.08.18 |
| Manga Fighter | Released | OnNet USA | OnNet USA | Korea | Diku | Fantasy / Shooter | Free to Play / Micro | 2007.12.03 |
| MapleStory | Released | Nexon | Nexon | Korea | Diku | Fantasy | Free to Play / Micro | 2005.06.11 |
| Martial Heroes | Released | CR-Space | CR-Space | Korea | Diku | Fantasy | Free to Play / Micro | 2007.10.09 |
| Megaten: Shin Megami Tensei Online | Released | Cave | Aeria Games | Japan | Diku | Fantasy | Free to Play / Micro | 2008.12.31 |
| Meridian 59: Evolution | Released | Near Death Studios | Near Death Studios | America | Diku | Fantasy | Subscription | 1995.12.15 |
| Metin 2 | Released | Ymir | G4BOX | Korea | Diku | Fantasy | Free to Play / Micro | 2007.04.24 |
| Minions of Mirth | Released | Prairie Games | Prairie Games | America | Diku | Fantasy | Free (Limited) / One-time fee | 2005.12.15 |
| Monster & Me | Released | NetDragon Websoft | TQ Digital | China | Diku | Fantasy | Free to Play | 2002.03.18 |
| Mortal Online | Closed Beta | Star Vault | Star Vault | Sweden | Diku | Fantasy | Subscription | |
| MU Online | Released | WebZen | K2 Network | Korea | Diku | Fantasy | Free (Limited) / Subscription | 2003.10 |
| Myst Online: URU Live | Released | Cyan Worlds | Cyan Worlds | America | Sandbox | Puzzle / Adventure | Open Source | 2007.02.15 |
| Myth War 2 | Released | Unigium | IGG | Singapore | Diku | Fantasy | Free to Play / Micro | 2008.06.17 |
| Navy Field | Released | SD EnterNet | SD EnterNet | Korea | Diku | Modern | Free to Play / Micro | 2006.02.08 |
| Neocron 2 | Released | Reakktor Media | 10Tacle Studios | Germany | Diku | Sci-Fi | Subscription | 2002.09.09 |
| Neo Steam: The Shattered Continent | Released | JoyImpact | Atlus Online | Korea | Diku | Steam Punk | Free to Play / Micro | 2009.06.11 |
| Nexus: The Kingdoms of the Winds | Released | KRU Interactive | Nexon | Korea | Diku | Fantasy | Free to Play / Micro | 1997.08.01 |
| NosTale | Released | Entwell | Servex | Korea | Diku | Fantasy | Free to Play | 2008.03.25 |
| Oberin | Released | Oberin | Oberin | America | Diku | Fantasy | Free to Play (Mac Only) | 2007.01.11 |
| Ogre Island | Released | Ogre Island | Ogre Island | America | Diku | Fantasy | Free to Play | 1999 |
| Oz World | Released | Ongameport | Ubiport | Korea | Sandbox | Modern | Free to Play / Micro | |
| Perfect World International | Released | Perfect World Entertainment | Perfect World Entertainment | China | Diku | Fantasy | Free to Play / Micro | 2008.08.27 |
| Phantasy Star Universe | Released | Sega | Sega | Japan | Diku | Fantasy | Subscription | 2006.24.10 |
| Phoenix Dynasty Online | Released | Object Software | EnjoyMMO | China | Diku | Fantasy | Free to Play | 2007.10.09 |
| Pi Story | Released | NCONY | Aeria Games | Korea | Diku | Fantasy | Free to Play / Micro | 2008.07.21 |
| Pirate King Online | Released | MOLI | Sing-Gium | China | Diku | Fantasy | Free to Play / Micro | 2007.05.18 |
| Pirates of the Burning Sea | Released | Flying Lab Software | Sony Online Entertainment | America | Diku | Fantasy | Subscription | 2008.01.22 |
| Pirates of the Caribbean Online | Released | Disney Interactive Studios | Disney Interactive Studios | America | Diku | Fantasy | Free (Limited) / Subscription | 2007.10.31 |
| PlaneShift | Released | Atomic Blue | Atomic Blue | Italy | Diku | Fantasy | Free to Play | 2008.11.30 |
| PlanetSide | Released | SOE San Diego | Sony Online Entertainment | America | Diku / FPS | Sci-Fi | Subscription | 2003.05.20 |
| Priston Tale | Released | Yedang Online | Wicked Interactive | Korea | Diku | Fantasy | Free to Play / Micro | 2007.05.17 |
| Priston Tale II | Alpha | Yedang Online | Wicked Interactive | Korea | Diku | Fantasy | Free to Play / Micro | |
| Puzzle Pirates | Released | Three Rings Design | Three Rings Design | America | Diku | Puzzle / RPG | Free to Play / Micro | 2003.12.03 |
| Ragnarok Online | Released | GRAVITY | Gravity Interactive | Korea | Diku | Fantasy | Free to Play / Micro | 2003.06.01 |
| Rakion | Released | Softnyx | Softnyx | Korea | Diku | Fantasy | Free to Play / Micro | 2005.12.01 |
| RAN Online | Released | Min Communications | Gonzo Rosso | Korea | Diku | Fantasy | Free to Play / Micro | 2006.27.06 |
| Rappelz | Released | Gala-Net | gPotato | Japan | Diku | Fantasy | Free to Play / Micro | 2006.11.03 |
| Realm Fighter | Released | Alternox | Alternox | America | Diku | Fantasy | Subscription | |
| Realm Online, The | Released | Norseman Games | Norseman Games | America | Diku | Fantasy | Subscription | 1996.12.31 |
| Red Stone | Released | Inklogic | K2 Networks | Korea | Diku | Fantasy | Free to Play / Micro | 2007.09.19 |
| Regnum Online | Released | NGD Studios | NGD Studios | Argentina | Diku | Fantasy | Free to Play | 2007.05.24 |
| Requiem | Released | GRAVITY | Gravity Interactive | Korea | Diku | Horror | Free / Micro / Subscription | 2008.06.19 |
| Rise | Released | Unistellar | Unistellar | Bulgaria | Diku | Sci-Fi | Subscription | 2006.04 |
| ROHAN Online | Released | YNK Korea | YNK Interactive | Korea | Diku | Fantasy | Free to Play / Micro | 2008.05.28 |
| Roma Victor | Released | RedBedlam | RedBedlam | Australia | Diku | Historical | Free to Play / Micro | 2006.07.14 |
| ROSE Online | Released | GRAVITY | Gravity Interactive | Korea | Diku | Fantasy | Free to Play / Micro | 2005.12.01 |
| Rubies of Eventide | Released | Mnemosyne | Mnemosyne | America | Diku | Fantasy | Free to Play / Donation | 2003.06.02 |
| Runes of Magic | Released | Runewaker | Frogster | Taiwan | Diku | Fantasy | Free to Play / Micro | 2009.03.19 |
| RuneScape | Released | Jagex | Jagex | United Kingdom | Diku | Fantasy | Free (Limited) / Subscription | 2001.01.04 |
| Ryzom | Released | Nevrax | The French | France | Diku | Fantasy | Free to Play | 2004.09.19 |
| Scions of Fate | Released | MGame | MGame | Korea | Diku | Fantasy | Free to Play / Micro | 2007.02.07 |
| Second Life | Released | Linden Lab | Linden Lab | America | Sandbox | Modern | Free to Play / Micro | 2003.06.23 |
| Secret World, The | Alpha | Funcom | Funcom | Norway | ARG / Horror | Modern | Unknown | |
| Shadow of Legend | Released | SmartCell | SmartCell | America | Diku | Fantasy | Free to Play / Micro | 2006.11.28 |
| Shaiya | Released | Sonovaslag Entertainment | Aeria Games | Korea | Diku | Sports | Free to Play / Micro | 2007.12.24 |
| Shot Online | Released | OnNet | OnNet USA | Korea | Diku | Fantasy | Free to Play / Micro | 2005.06.28 |
| Silkroad Online | Released | Joymax | Joymax | Korea | Diku | Chinese Myth | Free to Play / Micro | 2004.04.27 |
| Skyblade | Released | Z-Zone | Z-Zone | Philippines | Diku | Fantasy | Free to Play / Micro | 2006.11.20 |
| Spellcasters | Released | Overdose Cafein | Overdose Cafein | Turkey | Diku | Sci-Fi | Free to Play | |
| Star Sonata | Released | Star Sonata LLC | Star Sonata LLC | America | Diku | Sci-Fi | Free (Limited) / Subscription | 2004.10.16 |
| Star Trek Online | Alpha | Cryptic | Atari | America | Diku | Sci-Fi | Unknown | |
| Star Wars Galaxies | Released | SOE Austin | Sony Online Entertainment | America | Diku | Sci-Fi | Subscription | 2003.06.26 |
| Star Wars: The Old Republic | Alpha | BioWare Austin | LucasArts | America | Diku | Sci-Fi | Unknown | |
| Stargate Worlds | Alpha | Cheyenne Mountain / FireSky | MGM Interactive | America | Diku | Sci-Fi | Unknown | |
| Starport: Galactic Empires | Released | Playtechtonics | Playtechtonics | America | Diku | Sci-Fi | Free to Play | 2004.02.03 |
| StarQuest Online | Released | Castle Thorn Software | Castle Thorn Software | America | Diku | Sci-Fi | Free to Play | 2007.09.21 |
| Stone Age 2 | Released | DigiPark | Aeria Games | Japan | Diku | Prehistoric | Free to Play / Micro | 2008.07.03 |
| Sword of the New World | Released | IMC Games | HanbitSoft | Korea | Diku | Fantasy | Free to Play / Micro | 2007.07.10 |
| Tales of Pirates | Released | Moliyo | IGG | China | Diku | Fantasy | Free to Play / Micro | 2007.03.30 |
| Talisman Online | Released | Miracle Castle Limited | Miracle Castle Limited | China | Diku | Fantasy | Free to Play / Micro | 2007.11.16 |
| Tantra Online | Released | JoyImpact | HanbitSoft | Korean | Diku | Fantasy | Free to Play / Micro | 2004.10 |
| Tatsumaki: Land At War | Beta | Eyes Out Entertainment | Eyes Out Entertainment | America | Diku | Japanese History | Unknown | |
| Terra World | Released | TerraNovita Software | TerraNovita Software | Belgium | Diku | Fantasy | Free to Play / Micro | 2004.03.30 |
| There | Released | Makena Technologies | Makena Technologies | America | Sandbox | Modern | Free (Limited) / One time fee | 2003.10 |
| Tibia | Released | CipSoft | CipSoft | Germany | Diku | Fantasy | Free to Play / Micro | 1997.01 |
| Toontown Online | Released | Disney Interactive | Disney Interactive | America | Diku | Fantasy | Free to Play / Micro | 2003.06.02 |
| Turf Battles | Released | IMAZIC | Aeria Games | Korea | Diku | Fantasy | Free to Play / Micro | 2009.03.11 |
| Twelve Sky | Released | GigasSoft | Aeria Games | Korea | Diku | Fantasy | Free to Play / Micro | 2007.10.12 |
| Twilight War | Closed Beta | General Computers / Smiling Gator | Smiling Gator Productions | America | Diku | Post Apocalyptic | Subscription | |
| Ultima Online | Released | EA Mythic | Electronic Arts | America | THE OLD WEST | Fantasy | Subscription | 1997.09.25 |
| Valkyrie Sky | Closed Beta | Yolim Communications | Yolim Communications | Korea | Shmup Diku | All over the map | Unknown | |
| Valhyre | Alpha | Duck's Den Productions | Duck's Den Productions | America | Diku | Fantasy | Unknown | |
| Vanguard: Saga of Heroes | Released | SOE San Diego | Sony Online Entertainment | America | Diku | Fantasy | Subscription | 2007.01.30 |
| Vendetta Online | Released | Guild Software | Guild Software | America | Diku | Sci-Fi | Subscription | 2004.11.01 |
| Voyage Century | Released | Snail Game | IGG | China | Diku | Fantasy | Free to Play / Micro | 2006.12.22 |
| Warhammer Online: Age of Reckoning | Released | EA Mythic | Electronic Arts | America | Diku | Fantasy | Subscription | 2008.09.18 |
| Warrior Epic | Released | Possibility Space | True Games | China | Diku | Fantasy | Free to Play / Micro | 2009.05.19 |
| Wonderland Online | Released | Chinese Gamer International | IGG | China | Diku | Fantasy | Free to Play / Micro | 2008.03.15 |
| World of Kung Fu | Released | Tengren | VestGame Entertainment | China | Diku | Fantasy | Free to Play / Micro | 2008.08.01 |
| World of Warcraft | Released | Blizzard | Blizzard | America | Diku | Fantasy | Subscription | 2004.11.23 |
| Wurm Online | Released | OneTooFree | OneTooFree | Sweden | Sandbox | Fantasy | Free to Play / Micro | 2006.06.06 |
| WYD Global | Released | JoyImpact | HanbitSoft | Korea | Diku | Fantasy | Free to Play / Micro | 2003.05 |
| Xiah | Released | TaeWool Entertainment | OnNet USA | Korea | Diku | Fantasy | Free to Play / Micro | |
| Zero Online | Released | Net Dragon | TQ Digital | China | Diku | Sci-Fi | Free to Play / Micro | |
| Zu Online | Released | IGG | IGG | China | Diku | Chinese History | Free to Play / Micro |
Chart is forthcoming!
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