Massively Multiplayer Online (MMO)

7.8

3Kingdoms

Role-playing (RPG) · The Marble Group · 1992

8

Aardwolf MUD

Role-playing (RPG) · 1996

7.2

Abandoned Realms

Role-playing (RPG) · 1997

8.3

Achaea, Dreams of Divine Lands

Adventure · Iron Realms Entertainment · 1997

6.1

Active Worlds

Role-playing (RPG) · 1995

6.7

Aliens Online

Shooter · Mythic Entertainment · 1998

6.8

Alter Aeon

Role-playing (RPG) · DentinMud Internet Services · 1996

Arcadia

Arcade · Synthetic Reality · 1999

5.9

Argentum Online

Adventure · Pablo Márquez · 1999

7.5

Armageddon

Role-playing (RPG) · 1991