An Addon By Mpan3 in which you can archieve some nice effects in a very easy way, like reflections, post processing among others.
Below the author´s description:
Easy Game for Blender Game Engine
Easy Game is a collection of tools that allow you to work faster and more efficiently with the Blender Game Engine. It is made up of two components:
Easy Material creates physically-plausible photorealistic material templates(called uber materials). All you have to do is load in the appropriate textures to fill the slots. No more fiddling with materials and texture settings! The materials created by Easy Material are PBR compatible, so you know they’ll look great in any lighting condition. Easy Material supports Diffuse map, Normal map, Gloss/Specular Map, Light map, and Environment Reflection Map. With the right texture packs, Easy Material can make any solid surface look spectacular! The materials created are useable in the Game Engine as well as Blender Render. Textures not included.
Easy Asset helps you create common game assets such as first-person camera, day-night light cycle, and post-processing effects with just one-click. This way, you can start a project at turbo speed! The created assets as fully configurable from the Blender Properties Editor or Logic Editor.
Blenderartist thread here
Buy here $5,99
Price has changed since 20 may 2015, now you can get it for $29.99 , and it seem to be getting more expensive as more features are added, so if you need this, grab your copy before it gets more expensive 🙂