minigalaxy

Simple GOG Linux client

Allows you to download and play Linux games from the gog.com game store.
chocolate-doom running freedoom WADs

chocolate-doom

Doom engines closely-compatible with Vanilla Doom

Chocolate Doom aims to accurately reproduce the original DOS version of Doom and other games based on the Doom engine in a form that can be run on modern computers. Unlike most modern Doom engines, Chocolate Doom is not derived from the Boom source port and does not inherit its features (or bugs).
Fast-paced 3D first-person shooter

nexuiz

Fast-paced 3D first-person shooter

Nexuiz Classic is a fast-paced 3D deathmatch game with high-end and complex graphics effects. It is intended to be played over the Internet or over a local network. Several different game types, such as classic deathmatch, team deathmatch and capture the flag are available. It also supports a single-player mode and playing against the computer.

sdlfrotz

interpreter of Z-code story-files (SDL version)

Frotz interprets Z-code story-files, which are usually text adventure games (although a few arcade-style Z-code games have been written). Examples of such story files include the adventure games published by Infocom, as well as any games produced by compilers to this format, such as Inform. You can find a number of Inform-compiled games up for anonymous FTP at ftp://ftp.ifarchive.org/ or HTTP at http://www.ifarchive.org/
interpreter of Z-code story-files

frotz

interpreter of Z-code story-files

Frotz interprets Z-code story-files, which are usually text adventure games (although a few arcade-style Z-code games have been written). Examples of such story files include the adventure games published by Infocom, as well as any games produced by compilers to this format, such as Inform. You can find a number of Inform-compiled games up for anonymous FTP at ftp://ftp.ifarchive.org/ or HTTP at http://www.ifarchive.org/

infon-server

Program bugs to compete for food and survival - Server

Infon is a game which simulates the live of simple bugs who eat, propagate, eat each other and evolve. The players can not control the bugs directly but write their “intelligence” in the simple script language lua and upload it to the game using a plain telnet connection. The code can then be modified even while the game is running.