Ultimate Basketball Challenge is a 5 on 5 basketball game for Unix variants including Linux and FreeBSD. It aims to be fully customizable (add/edit teams, players, stats, courts, arenas, etc.). You can currently play against the basic AI. It is in constant heavy development and new features are added often.
The Deimos Project is a 3D space combat simulator and modular game library collection. It includes a 3D modeler designed with a programmer's needs in mind. It allows you to construct 3D models by writing Java source code. All you need to design a model is a computer, some graph paper, and a pencil. The modeler's internals function as a simple OpenGL scene graph API, without preventing the use of low-level OpenGL commands. For storing settings and other hierarchically-representable data, the project provides a Hierarchy library that stores data atomically using XML. It also features a timing library, a game object container system, and many other features.
Simulum deals with different simulations of star movements and their visualizations. At first it looks at the projection and accumulation of star brightness. In actually doing this it distributes stars among a three dimensional figure. To get a nice effect it combines the photographic image production with a moving view point. So the outcome is the visual impression of flying through a star field. Secondly it studies different algorithms of particle movements and clustering. The primary approach uses a combination of Newton's gravitational law, energy, and impulse conservation. At all these stages an highly dynamic view of the processes is able to be produced.
Championship Generator produces a list of all the meetings which must occur between the participants of a championship. It can be used to produce the challenges between teams if competitions are not foreseen to directed elimination. It supports championships where it is necessary to consider the matches at home and away. It can also try to avoid fights between the big teams in the first and last days. It also supports the case in which two teams have a mutual stadium, and therefore cannot simultaneously play at home or away.
dopewars is a UNIX rewrite of the MS-DOS program of the same name, which in turn was inspired by John E. Dell's "Drug Wars" game. You have one month to buy and sell drugs on the streets of New York, the aim being first to pay off your debt to the loan shark and then to make a fortune. And if you have to shoot a few cops in the process, well... The game includes TCP networking allowing you to meet (and shoot) other human drug dealers. Computer drug dealers are currently in development.