Here my last example using Unity3D, it is a very simple First Person Game. I made it following the fps tutorial from official web site of unity (view tutorial). All model are from free 3d models pages and is the part that take more time in the example 
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unity3D example 3
unity3D example 1
unity3D example 2
This game is a personal project. It is about trying to keep a soccer ball in the air by clicking on it. Have a bonus system that do more difficult the game. The game works on Facebook, and you can see your friends ranking or the world ranking.
You could check the game on:
http://apps.facebook.com/footballsoccer/
Your feedback, will be very helpful.
This is a very precarious space invaders, which started while studying the book of design patterns “Actionscript 3.0 Design Patterns” by O’Reilly, specifically the chapter’s Factory Patern, started on this instance to mount the game (say something quite simple), was also working Mauricio Stkel, collegue. Well now I share with you what you want to see the code. The code in a project on google code, so there are for download the repository using a tool like svn version;), if someone comes to us not to mention better for the changes go in the same project. The project can continue whoever.
Here a example.
http://lab.miguelmoraleda.com/mongitime
Google Code:
http://code.google.com/p/mongitime/
