Billiards is a cue sports simulator. It aims for physical accuracy and simplicity. It should be useful for practicing billiards on your own and against your friends when a real pool table is not available. Both a pool table and a billiards table (that is, with and without pockets) are implemented, allowing you to play eightball, nineball, and carom billiards games.
Five Hundred is a card game for four players similar to Euchre or Bridge, especially popular in Australia and New Zealand. The wikipedia page has a comprehensive description of gameplay. This version is implemented in C++/Qt. It incorporates graphics from the svg-cards project. Computer players are scriptable in Lua.
FreedroidRPG is an isometric RPG game inspired by Diablo and Fallout. There is a war, and we are losing it. No one really knows why the bots started killing us. Most don't even want to know. The human race is reduced to little more than a few isolated groups of people trying to survive. Somewhere in a place known as Temple Wood, a hero is about to wake up from a long sleep...
Airrace is an air race game where the player is required to pilot a plane through sets of pylons in a prescribed order. The flight model is pretty realistic in that it features most of the effects that make flying an aircraft challenging but without having to worry about what several dozens of buttons on the dashboard do. Right now, seven training tracks and five race tracks are available. Airrace has been written on top of Aviation and Techne.