Coder available - Join me in building my portfolio!

Hi,

I'm a game developer (not my job) and I'm trying to create a portfolio. If you are a designer with an idea and artistic skills then I can work on your project free of charge as long as it doesn't take too much time to complete. I'm not talking about a full time collaboration.
I clearly have no past works I can show you (that's why I give away my time for free) but I accept to demonstrate my skills by creating a small demo of any kind, the choice is yours.

About my skills (only the ones related to game development):
- 10+ years of experience in creating games (just an hobby, no commercial projects)
- c#, html5/javascript
- XNA/MonoGame
- GameMaker: Studio
- Currently learning Unity but I'm already confident I can make a game with it
- Published Apps on the Windows Phone marketplace (even a couple of mini games)
- Game programming is my greatest passion, I'd do that all the time if I could

I only require that you are truly committed to shipping "our" game.

Please PM me