1. I NEED MEETING AND TEAM INFORMATION TODAY

2. Platforms

3. General Note
There are plenty of engine and framework options available.
Research.
Consider what you want to accomplish and choose wisely.

4. Starting Assumption
Reasonable balance between complexity and capability
Very good tutorials
Build a community
Unity game engine is quickly growing in popularity and usage. It’s probably the most used within the department. Scripting is done in javascript, C#, or Boo.
CryEngine 3 went free in Tested in many application areas. Scripting in Lua.

5. Other 3D Options
Unity game engine is quickly growing in popularity and usage. It’s probably the most used within the department. Scripting is done in javascript, C#, or Boo.
CryEngine 3 went free in Tested in many application areas. Scripting in Lua.

6. 2D Options Pygame. Well used and documented. Uses python obviously.
Love2d. Lua scripting engine. Pretty easy to get up and running. Good documentation.

7. HTML5 Canvas EaselJS For audio, look at the Web Audio API (W3C)
EaselJS: Pretty easy to set up, plenty of tutorials and documentation. Includes classes for spritesheet animations
KineticJS: Plenty of demos on the front page, good documentation and tutortials.
For audio,
look at the Web Audio API (W3C)

8. Bottom Line Lots of resources (freegameslist)
Requirement is that it be
Programmable
Legal
Unfettered