MiniTron
Size:  412 KB
Players:  1 to 8
Download Here

I found an interesting bit of source code and it inspired me to make this.  The original source code was written by Rich Davey (rich@fatal-design.com), but I added a beginning, an end, menus, multiplayer, music, and sound effects.

UPDATE:  The current version is 1.5.  This version has up to 8 players.  Future updates include teams, power ups, and more customizable features.