board mark up and game tree

quarry

Board games Go, Amazons, and Reversi (a.k.a. Othello)

Quarry is a multi-purpose GUI for several board games, at present Go, Amazons and Reversi (a.k.a. Othello.) It allows users to play against computer players (third-party programs, e.g. GNU Go or GRhino) or other humans, view and edit game records.
engine for Ultima VII (BG, FOV, SI, SS)

exult

engine for Ultima VII (BG, FOV, SI, SS)

Exult is an open source engine for playing Ultima VII on a variety of modern operating systems and environments. The Black Gate (including Forge of Virtue) and Serpent Isle (plus Silver Seed) are both playable to the end. Some differences to the original games exist; see sections 5.3/5.4 of the FAQ.
KDE version of the Simon electronic memory game

blinken

KDE version of the Simon electronic memory game

Blinken is based on an electronic game released in 1978, which challenges players to remember sequences of increasing length. On the face of the device, there are 4 different color buttons, each with its own distinctive sound. These buttons light up randomly, creating the sequence that the player must then recall. If the player is successful in remembering the sequence of lights in the correct order, they advance to the next stage, where an identical sequence with one extra step is presented.
puzzle game about witty fish saving the world sokoban-style

fillets-ng

puzzle game about witty fish saving the world sokoban-style

Fish Fillets is strictly a puzzle game. The goal in every of the seventy levels is always the same: find a safe way out. The fish utter witty remarks about their surroundings, the various inhabitants of their underwater realm quarrel among themselves or comment on the efforts of your fish. The whole game is accompanied by quiet, comforting music.
A typical game of nibbles.

gnome-nibbles

snake game, up to four players

This is a GNOME port of the popular “Snake” game.
Action game in four spatial dimensions

adanaxisgpl

Action game in four spatial dimensions

Adanaxis is a fast-moving first person shooter set in deep space, where the fundamentals of space itself are changed. By adding another dimension to space this game provides an environment with movement in four directions and six planes of rotation. Initially the game explains the 4D control system via a graphical sequence, before moving on to 30 levels of gameplay with numerous enemy, ally, weapon and mission types. Features include simulated 4D texturing, mouse and joystick control, and original music. Screenshots, movies and further information are available at http://www.mushware.com/.