ioquake3 is a free software first person shooter engine based on the Quake 3: Arena and Quake 3: Team Arena source code. Compared to the original, ioquake3 has been cleaned up, bugs have been fixed and features added. The permanent goal is to create a Quake 3 distribution upon which people base their games, ports to new platforms, and other projects.

ODE is a high performance library for simulating rigid body dynamics. It is fully featured, stable, mature and platform independent with an easy to use C/C++ API. It has advanced joint types and integrated collision detection with friction. ODE is useful for simulating vehicles, objects in virtual reality environments and virtual creatures. It is currently used in many computer games, 3D authoring tools and simulation tools.

go-sdl2 is SDL2 wrapped for Go users. It enables interoperability between Go and the SDL2 library which is written in C. That means the original SDL2 installation is required for this to work.

Cross Platform Object Oriented Input Lib System is a cross platform, simple solution for using all kinds of Input Devices (Keyboards, Mice, Joysticks, etc) and feedback devices (e.g. force feedback). Meant to be very robust and compatible with many systems and operating systems.

Rinutils is a set of C headers containing macros and static functions that have been extracted from Shlomi Fish's projects.

GrafX2 is a bitmap paint program inspired by the Amiga programs Deluxe Paint and Brilliance. Specializing in 256-color drawing, it includes a very large number of tools and effects that make it particularly suitable for pixel art, game graphics, and generally any detailed graphics painted with a mouse.

libtcod is a fast, portable and uncomplicated API for roguelike developers providing an advanced true color console, input, and lots of other utilities frequently used in roguelikes.

QQWing is a Sudoku puzzle generator and solver. It offers the following features:

1. Can solve 1000 puzzles in 1 second and generate 1000 puzzles in 25 seconds.

2. Uses logic. Uses as many solve techniques as possible when solving puzzles rather than guessing.

3. Rates puzzles. Most generators don't give an indication of the difficulty of a Sudoku puzzle. QQwing does.

4. Can print solve instructions for any puzzle.

5. Customizable output style, including a CSV style that is easy to import into a database.

ScummC is a set of tools allowing to create SCUMM games from scratch. It is capable of creating games for SCUMM version 6 and partially version 7.

Pygame-menu is a python-pygame library for creating menus and GUIs. It supports several widgets, such as buttons, color inputs, clock objects, drop selectors, frames, images, labels, selectors, tables, text inputs, color switches, and many more, with multiple options to customize.

pytmx is a map loader for python/pygame designed for games. It provides smart tile loading with a fast and efficient storage base.

Sfxr is a tool for quickly generating simple sound effects. Originally created for use in video game prototypes, it can generate random sounds from presets such as "explosion" or "powerup".

LibreSprite is a tool for creating 2D pixel art for video games. In addition to basic pixel editing features, it can assist in the creation of animations, tiled graphics, texture atlases, and more. LibreSprite is a fork of the latest GPLv2 commit of Aseprite.

This package contains a collection of modules for the Bennu Game Development programming language, from CD handling through SDL to joystick support.

dhewm3 is a source port of the original Doom 3 engine (not Doom 3: BFG Edition), also known as id Tech 4. Compared to the original version of the Doom 3 engine, dhewm3 has many bugfixes, supports EAX-like sound effects on all operating systems and hardware (via OpenAL Softs EFX support), has much better support for widescreen resolutions and has 64bit support.

Flatzebra is a simple, generic C++ game engine library supporting 2D double-buffering.

Box2D is a 2D rigid body simulation library for games. Programmers can use it in their games to make objects move in realistic ways and make the game world more interactive. From the game engine's point of view, a physics engine is just a system for procedural animation.

Tiled is a general purpose tile map editor. It is meant to be used for editing maps of any tile-based game, be it an RPG, a platformer or a Breakout clone.

SLADE3 is a modern editor for Doom-engine based games and source ports. It has the ability to view, modify, and write many different game- specific formats, and even convert between some of them, or from/to other generic formats such as PNG.

This package provides an interactive tutorial for the Ren'py visual novel engine, explaining all of its features.

Package sdl provides a Driver for making native graphical apps.

SFML provides a simple interface to the various computer components, to ease the development of games and multimedia applications. It is composed of five modules: system, window, graphics, audio and network.

OpenMW is a game engine which reimplements and extends the one that runs the 2002 open-world RPG Morrowind. The engine comes with its own editor, called OpenMW-CS which allows the user to edit or create their own original games.

Allegro is a library mainly aimed at video game and multimedia programming. It handles common, low-level tasks such as creating windows, accepting user input, loading data, drawing images, playing sounds, etc.