The Irrlicht Engine is a high performance realtime 3D engine written in C++. Features include an OpenGL renderer, extensible materials, scene graph management, character animation, particle and other special effects, support for common mesh file formats, and collision detection.

Abe's Amazing Adventure is a scrolling, platform-jumping, key-collecting, ancient pyramid exploring game, vaguely in the style of similar games for the Commodore+4.

MegaGlest is a cross-platform 3D real-time strategy (RTS) game, where you control the armies of one of seven different factions: Tech, Magic, Egypt, Indians, Norsemen, Persian or Romans.

Extreme Tux Racer, or etracer as it is called for short, is a simple OpenGL racing game featuring Tux, the Linux mascot. The goal of the game is to slide down a snow- and ice-covered mountain as quickly as possible, avoiding the trees and rocks that will slow you down.

Collect herrings and other goodies while sliding down the hill, but avoid fish bones.

This game is based on the GPL version of the famous game TuxRacer.

GNU Go is a program that plays the game of Go, in which players place stones on a grid to form territory or capture other stones. While it can be played directly from the terminal, rendered in ASCII characters, it is also possible to play GNU Go with 3rd party graphical interfaces or even in Emacs. It supports the standard game storage format (SGF, Smart Game Format) and inter-process communication format (GMP, Go Modem Protocol).

X-Moto is a challenging 2D motocross platform game, where physics play an all important role in the gameplay. You need to control your bike to its limit, if you want to have a chance finishing the more difficult challenges.

PipeWalker is a simple puzzle game with many different themes: connect all computers to one network server, bring water from a source to the taps, etc. The underlying mechanism is always the same: you must turn each tile in the grid in the right direction to combine all components into a single circuit. Every puzzle has a complete solution, although there may be more than one.

M.A.R.S. is a 2D space shooter with pretty visual effects and attractive physics. Players can battle each other or computer controlled enemies in different game modes such as space ball, death match, team death match, cannon keep, and grave-itation pit.

GNUbik is a puzzle game in which you must manipulate a cube to make each of its faces have a uniform color. The game is customizable, allowing you to set the size of the cube (the default is 3x3) or to change the colors. You may even apply photos to the faces instead of colors. The game is scriptable with Guile.

Fish Fillets NG 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.

Harmonist: Dayoriah Clan Infiltration is a stealth coffee-break roguelike game. The game has a heavy focus on tactical positioning, light and noise mechanisms, making use of various terrain types and cones of view for monsters. Aiming for a replayable streamlined experience, the game avoids complex inventory management and character building, relying on items and player adaptability for character progression.

Barbie Seahorse Adventures is a retro style platform arcade game. You are Barbie the seahorse who travels through the jungle, up to the volcano until you float on bubbles to the moon. On the way to your final destination you will encounter various enemies, servants of the evil overlord who has stolen the galaxy crystal. Avoid getting hit and defeat them with your bubbles!

This is a small puzzle game made for the 2024 Spring Lisp Game Jam. The objective is to reach the goal by assigning rules to colors.

Bastet (short for Bastard Tetris) is a simple ncurses-based falling brick game. Unlike normal Tetris, Bastet does not choose the next brick at random. Instead, it uses a special algorithm to choose the worst brick possible.

Playing bastet can be a painful experience, especially if you usually make canyons and wait for the long I-shaped block to clear four rows at a time.

No More Secrets provides a command line tool called "nms" that recreates the famous data decryption effect seen on screen in the 1992 movie "Sneakers".

This command works on piped data. Pipe any ASCII or UTF-8 text to nms, and it will apply the hollywood effect, initially showing encrypted data, then starting a decryption sequence to reveal the original plaintext characters.

egawk is Enhanced GNU Awk. It is a fork of GNU Awk with some enhancements designed and implemented by Kaz Kylheku. In particular, Enhanced GNU Awk provides the @let statement for declaring block-scoped lexical variables.

cppawk is a shell script that invokes the C preprocessor (cpp) on Awk code and calls Awk (by default GNU Awk) on the result.

cppawk understands the basic Awk options like -F and -v, and also understands common cpp options like -I and -Dmacro=value.

cppawk has no dependencies beyond Awk, cpp, sed and some GNU core utilities (including printf). Preprocessed programs can be captured and transferred to systems that have Awk but not cpp or cppawk.

Gawk is the GNU implementation of Awk, a specialized programming language for the easy manipulation of formatted text, such as tables of data. Gawk features many extensions beyond the traditional implementation, including network access, sorting, and large libraries.

cppawk is a shell script that invokes the C preprocessor (cpp) on Awk code and calls Awk (by default GNU Awk) on the result.

cppawk understands the basic Awk options like -F and -v, and also understands common cpp options like -I and -Dmacro=value.

cppawk has no dependencies beyond Awk, cpp, sed and some GNU core utilities (including printf). Preprocessed programs can be captured and transferred to systems that have Awk but not cpp or cppawk.

mawk is an interpreter for the Awk programming language. This version aims to be smaller and faster than GNU Awk, at the expense of fewer features and extensions.

Gawk is the GNU implementation of Awk, a specialized programming language for the easy manipulation of formatted text, such as tables of data. Gawk features many extensions beyond the traditional implementation, including network access, sorting, and large libraries.

GCC is the GNU Compiler Collection. It provides compiler front-ends for several languages, including C, C++, Objective-C, Fortran, Ada, and Go. It also includes runtime support libraries for these languages.

GCC is the GNU Compiler Collection. It provides compiler front-ends for several languages, including C, C++, Objective-C, Fortran, Java, Ada, and Go. It also includes runtime support libraries for these languages.

This is a reference manual for the C programming language, as implemented by the GNU C Compiler (gcc). As a reference, it is not intended to be a tutorial of the language. Rather, it outlines all of the constructs of the language. Library functions are not included.