Glest is a 3D realtime strategy game (or RTS) set in a sort of pseudo medieval Europe. The game, as of version 2, features two factions, Tech and Magic. Each faction also has their own unit types, buildings and tech tree (ie more stuff to do later). As typical with RTS games there are resources to gather and mine.
Blobby Volley is an action-filled, multiplayer, addictive volleyball game for 1 or 2 players. The players can go head-to-head with each other either on the same machine, on LAN or even on the internet.
While it is just another classic overhead-scrolling space shooter, it is a game with a twist. You can not let any of the alien ships past you; each one will cost you a life. Moreover, the ammunition is also limited. This is what makes the game very challenging, almost impossible.
The idea is simple. You have to keep building walls and outrun your opponent by not bumping into either your wall or your opponents. While the game has options of playing against the bot, the game truely shines when it is played against a number of human players (LAN or online).
If you have played Doom, Quake, Unreal Tournament, or any of their various free mods/clones, then you already have a good idea of what to expect from Nexuiz. Like all those games before it, Nexuiz is simple, dumb fun.
Frets on Fire is an open source clone of the ever-popular PlayStation 2 music/rhythm game Guitar Hero. It’s a free download and is available for Windows, Linux and the Mac, though the Mac version is experimental.
Hedgewars is multiplatform, a free turn-based blast-em-up in the vein of Worms. It features a wide range of weapons, multiple maps, and excellent graphics and audio. Offers single player, multiplayer, and (in theory) multiplayer over the internet modes.