Xpuyopuyo is a Tetris-like game in which the object is to match four or more blocks of the same color. Multiple matches are worth more points, and result in rocks being dumped on the opponent. It supports human-human, human-AI, AI-AI, or network game play, and a number of gameplay options including themes and music. The game also features AIs that can learn to play strategically.
xrick is a clone of Rick Dangerous. Written entirely in C, it relies on the Simple DirectMedia Layer library and has been ported to Linux (its primary target). Way before Lara Croft, back in the 1980's and early 1990's, Rick Dangerous was the Indiana Jones of computer games, running away from rolling rocks and avoiding traps in places from South America to a futuristic missile base via Egypt and the Schwarzendumpf castle.
Scavenger is a cool arcade/thinking game very much like Lode Runner. You've got to run around and collect objects while avoiding enemies. Some objects are buried and you've got to dig down to get at them. It's an addictive game and some of the levels are devilishly (cruelly) complicated to solve.
Xscorch is a clone of the classic DOS game "Scorched Earth". The basic goal is to annihilate enemy tanks using overpowered guns. Players can purchase weapons and accessories to defend their tank, and they can attack enemy tanks by adjusting the angle of the tank's turret and the firing power. Xscorch supports gameplay with humans and computer AIs, and network gameplay is in development.
Xsheep is a clone of the Windows Esheep toy, a sheep that runs about your screen falling off windows and looking cute. This version was put together as an experiment, and the author is looking for someone else to take it over. The graphics are the original Esheep graphics used with permission.
Xtank is a fairly old but reliable graphical game requiring multiple players and optimised for a local area network of X displays. It features fast update rates, assorted mazes, various vehicles, simple graphics, drone tanks, and team play. Different game styles are possible; straight combat, territorial expansion, maze races with and without weapons, and ultimate frisbee. The "north" development branch is James Cameron's modifications to the 1.3f version for use on 800x600 displays in a network of Linux based second-hand gaming workstations in a rural village.