The first game I ever made, Unga Bunga is a multiplayer platform/deathmatch hybrid for 2 to 3 players, in which the players run around as club-wielding cavemen in exotic habitats, kill moose and bears to gain technology (which allows them to use better weapons, including spears, traps, firesticks, coals, bow and arrow, sword), fend off invading philistines, and ultimately compete with each other for various objectives (depending on the game type). An amateur effort, but still a lot of fun. Note: this is a multiplayer-on-one-keyboard game only; no single player mode exists.
A wonderful tribute to the old classic, Marble Madness, Hamsterball lets you use your mouse or keyboard to race a hamster through one twisted, loopy level after another. Incredibly addictive and fun to play, it's little wonder that this game was awarded "Downloadable Game of the Year" by the Academy of Interactive Arts and Sciences. The game features a nice multiplayer mode as well.
One of the best platformers ever released for the PC. In Gish, you play a 12-pound ball of tar in search of true love. Become slippery to slide through small places, sticky to climb up walls and ceilings, and rock hard to force your way through barriers. The game's physics engine, along with all of its production values make this one a real pleasure to play.
Neko Puzzle is a wonderfully fast, fun little puzzle game that makes your brain feel really good! Guide your flying kitty in a course through each level solitaire-style, before the time runs out, or compete in real-time against another human opponent. The puzzles are different every time you play, so whenever your brain is in need of that "massaged" feel, pop open this game, and your good to go!