I have lost count of the number of computer games i have created. Many of them are small simple ones, but there are a couple of more complex ones with (fake) 3D scrolling, fancy graphic, and great explosions, and a couple of puzzle games, and a virtual verion of a boardgame I created many years ago.
The biggest one I was involved with was Hairpin 1 and 2. A formula 1 car racing game. The first was released as public domain. A company in england picked it up and gave us a list of changes. They said if we did that they would release it. So we spent a year on it (2 of us -in our final year of high school!) and resubmitted it. The company went belly up about that time however

So instead we released it through Deja Vu Software, and we get royalties for evey copy sold......I am just waiting on my first payment now....... I was also involved a bit with Screech which is still in development, although I haven't contributed to that one for a few years now.
Most of these games are for the Amiga, some are for PC. My most recent stuff is in Java, but none of that is noteworthy, mainly stuff like breakout - It was really to test dynamic music algorithms.