Information and development of the add-on at: http://rikutogame.dnsd.me/bge_material_creator
Selling add-on at: http://cgcookiemarkets.com/blender/all-products/blender-game-engine-material-creator-bge-mc/
New add-on skin and more functionalities !
Add-on approved by CGCookie: http://cgcookiemarkets.com/blender/all-products/blender-game-engine-material-creator-bge-mc/