There are four games to choose from. Have fun!

Pear School This addictive Flash puzzle game is similar to Goober's Lab or Bejeweled, but has two ways to make matches, pear shaped wildcards, and edge rotation.
Triangulation This old school arcade style game is written in Flash. It's a 2d shooter game made starting from the great tutorial at ASGamer.com.
Stick Game This Google Gadget game is written in JavaScript and is a variant on the game Nim. Whoever crosses off the last stick losses.
Dark Maze My daughter likes this game. It is written in JavaScript and HTML. Find your way through a maze while only your immediate surroundings are visible.

In addition to the online games, here is a simple game for Windows that I made to sharpen my programming skills.

Word Neighbors