As the title says.. Have fun kids! (nothing prevents old dudes to play this, but to me it seems obvious this games aim for very young audience).

Coming early 2011, Wakfu, published by Square Enix, is a Free-to-Play Massively Multiplayer Online Role Playing Game (MMORPG) featuring tactical turn-based combat, vast character customization, and a deep player influenced world. Available on Windows, Mac, and Linux PC systems.

‘A Mystical Land’ is a free-to-play 3D browser game that offers loads of adventures to you and thousands of other players in a fantastic world. It uses many Facebook features which allow you to easily find your Facebook friends and share achievements and news.