Hi Terrancd,
I pulled this directly from the steam page...
Key Features:
1) Create Unique Creations - On purchase, you receive 20,000 graphic files, we are still developing much more.
2) License - Use the Steam IGB Package for your game, web, print, or other commercial development project. All assets are royalty free, no hidden costs.
3) New Content - Content evolves depending on support. Get us to work on what you specifically want.
4) Full Access - You may edit, manipulate, and change the graphics in any way for use with your game development. Some Photoshop files included.
Included Assets: (take note that these may be added onto)
*Newer - Icon Creation Kit
*Newer - Tank Creation Kit
*New - Animated Character Creator Pack
*New - Animated Bug Invaders & colorful planets
Gems
Interface Builder (5 styles)
Jungle Scene and Platform
Landbuilder
Map Maker (5 styles)
Platform Pack
Puzzle Assets
RPG Interface
Ship Builder (29 styles)
Sky Builder
Solar System
Solar System 2
Space Assets
Top Down Landscape
Weapon Builder future
Weapon Builder modern
Weapon Builder medieval
-Neotracer