World of Warcraft (abbreviated to WoW) is a massively multiplayer online role-playing game (MMORPG) released in 2004 by Blizzard Entertainment.

Diablo is an action role-playing hack and slash dungeon crawler video game series.

Bastion is an action role-playing experience that redefines storytelling in games, with a reactive narrator who marks your every move.

RuneScape is a fantasy MMORPG.

NetHack is a single-player roguelike video game.

Mythruna (myth + rune + a) is a game under development attempting to combine serious role-playing elements with an endless, living, and completely modifiable …

RPGBoss is a software to create RPG games.

Torchlight is an action role-playing game.

Borderlands is a series of action role-playing first-person shooter video games in a space western/science fantasy setting.

Guild Wars is a massively multiplayer online role-playing game (MMORPG) series.

Gnomescroll is an open source multiplayer voxel game.

Flare (game) is a free/libre game engine for classic isometric action RPGs.

The Mana World is a free 2D open source MMORPG.