I have always dabbled in writing computer games, normally without a AAA Game Engine to help. I have always been fascinated by the physics behind the games and how developers who write games cheat. If we were to use real world physics then some effects would not be possible without a lot more processing power, although this is getting to be less of an issue these days. Game developers usually fudge, to some extent, the formulas and figures that define the real world around us to give us almost realistic experiences. Anyways on with the links.
There are dozens of gaming engines out there, I have used a very early release of libGDX for a never published Android game. You can now get engines like Unity, Unreal engine, CryEngine and Leadworks for free or in some cases very cheap. If you have not signed up to Steam do so now as there are usually a number of deals and sites like HumbleBundle do great offers on development tools from time to time.
So fire up your PC and go do some awesome game development.
Android Stuff 