Limbo - “Dark, disturbing, yet eerily beautiful, Limbo is a world that deserves to be explored.” Joystiq. “Limbo is as close to perfect at what it does as a game can get.” Destructoid. Buy LIMBO: Special Edition.
FlyFF - Flyff (Fly For Fun) is one of the greatest running fantasy based MMOs.
Botanicula - Botanicula is a point-and-click adventure game developed by Amanita Design.
Wartune - Wartune is an Action-Adventure, Strategy, Massively Multiplayer Online, Role-playing, Fantasy-based and Browser-based video game.
A Walk in the Dark - A Walk in the Dark is one of the most addictive and quite challenging Action, Puzzle-Platform and Adventure video game that takes you on an amazing journey in the world of wonders.
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.