Any one Interested in Learning Modern 3D Graphics Programming:
Link : www.arcsynthesis.org/gltut/
Here is a Opportunity for Open Source Gaming. There require contribution so if you are keen on going in to gaming here is an Opportunity.This blog in the link provides you with demo, source code and the design. So have fun.
Invent your own computer Games with Python:
Here is an opportunity for Developer who are working on Arduino :