Create your own game using Unity game engine!
For all game designers out there I really advise u to start with the unity game engine. It is easy to use, there many tutorials out there, and is really very solid. If you are interested in knowing what it really is and want tutorials visit my site its in my sig in the unity section. Or just read about it on wiki.
There is a huge list of links for tutorials and stuff.
Also I am always ready to help any beginner and help him with his first step to creating his first game!