This is a listing of player-made guilds that were first established on the oRO servers.
| Guild Emblem |
Guild Name | Guild Type | Date of Foundation | Server of Origin | Guildleader(s) |
|---|---|---|---|---|---|
 |
Legend | PVM, War of Emperium | 2004 | Chaos | Spring |
 |
Harbingers of Lloth | War of Emperium | 2004 | Chaos | Champoo |
 |
Covenant | PVM, War of Emperium | 2004 | Chaos | Nokki |
 |
Syndicate | PVM, PVP, War of Emperium | 2004 | Chaos | Flarez |
 |
S i F | PVM, PVP, War of Emperium | 2004 | Chaos | Baby Onion |
| Seraphic Law | PVM, PVP, War of Emperium | 2004 | Chaos | Kensuki | |
| UnTOucHaBLes | PvM, PVP | 2004 | Chaos | Rikimaru | |
 |
Algiz | PVP, War of Emperium | 2004 | Chaos | Guk |
 |
Karma | PVP, War of Emperium | 2005 | Chaos | -Gonzo- |
 |
Valor | PVP, War of Emperium | 2005 | Chaos | Starr |
 |
Pantheon | PVP, War of Emperium | 2005 | Chaos | Nego1as |
| Banana | PVP, War of Emperium | 2005 | Chaos | Taki~ | |
 |
Heavenly Beings | PVM, War of Emperium | 2005 | Chaos | Callisto |
 |
Insomniac | PVM, PVP, War of Emperium | 2005 | Chaos | Taki~ |
 |
M e H | PVM, PVP, War of Emperium | 2005 | Chaos | OmniMage |
 |
Misplaced | PVM, PVP, War of Emperium | 2005 | Chaos | -Gonzo- |
| Empire of the Sun | Gamemasters' secret alt guild | 2004 | Chaos | ||
| Divinity | PVM, War of Emperium | 2006 | Chaos | Mooga | |
| Raffindale | PVM, War of Emperium | 2006 | Chaos | Lord Raffin | |
| Stalins Knights | PVM, War of Emperium | 2007 | Chaos | Pyrobolt | |
 |
Wankers | PVP, War of Emperium | 2005 | Chaos | Starr |
| Eden | PVM, War of Emperium | 2005 | Chaos | ~Subaru~ | |
 |
Tribute | PVM, War of Emperium | 2005 | Chaos | Arjuna` |
| Sovereign | PVM, War of Emperium | 2006 | Chaos | Zangat | |
| <guild name> | <PVM, PVP, and/or WoE> | <year month day> | <server name> | <guildleader(s)> | |
| <guild name> | <PVM, PVP, and/or WoE> | <year month day> | <server name> | <guildleader(s)> | |
| <guild name> | <PVM, PVP, and/or WoE> | <year month day> | <server name> | <guildleader(s)> |