Wartune - Wartune is an Action-Adventure, Strategy, Massively Multiplayer Online, Role-playing, Fantasy-based and Browser-based video game.
Black Desert Online - This Korean developed MMORPG offers a dynamic, action-based combat system in a richly developed fantasy setting.
NosTale - NosTale (The Tale of Nomads of Silver Spirit) is a totally free MMORPG that includes simple (but beautiful) graphics and also lots of class options.
AdventureQuest Worlds - AdventureQuest Worlds (or AQWorlds) is an easy but very popular browser-based massively multi-player online Role-Playing game.
Runescape - RuneScape is 3D Action-Adventure, Massively Multiplayer Online, Role-playing, Fantasy-based and browser-based video game developed and published by Jagex.
LaTale - LaTale draws heavily from some other 2D side scrolling video games to provide a great fantasy MMORPG world.