Extra has no watermark in left side of the screen. Extra can support terrains, standard cannot. Extra can go up to 1024x768, standard can only do 800x600. Extra can use Chunked terrain and geometric LOD, standard cannot. Extra is $40 more expensive.
And that is about it.
"Oh no, it's true! I'm a love magnet!"
Calvin from Calvin and Hobbes
My name's Anonymous_Alcoholic.
