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.

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.

Eureka is a map editor for the classic DOOM games, and a few related games such as Heretic and Hexen. It comes with a 3d preview mode and a 2D editor view.

Originally inspired by Unity IMGUI (immediate mode GUI API).

Designed as an auxiliary module for raylib to create simple GUI interfaces using raylib graphic style (simple colors, plain rectangular shapes, wide borders...) but it can be adapted to other engines/frameworks.

Ren'Py is a visual novel engine that helps you use words, images, and sounds to tell interactive stories that run on computers and mobile devices. These can be both visual novels and life simulation games. The easy to learn script language allows anyone to efficiently write large visual novels, while its Python scripting is enough for complex simulation games.

This package provides a collection of command line utilities used for building Quake maps as well as working with various Quake file formats. The utilities include qbsp for building the geometry, qvis for calculating visibility, qlight for lighting, bspinfo for getting information, and bsputil for basic editing of data in a map file.

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.

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.

The OpenGL Character Renderer (GLC) is a state machine that provides OpenGL programs with character rendering services via an application programming interface (API).

The STEAD (Simple TExt ADventures) interpreter provides functionality to play games that mix elements of visual novels, interactive fiction and classic point-and-click adventures.

The Question is a short example visual novel showing that your Ren'py installation works, similar to a "Hello World" program in other programming languages.

This package provides a game networking framework for Python.

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.

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.

This package provides the standard library for Inform 6.

PhysicsFS is a library to provide abstract access to various archives. It is intended for use in video games. For security, no file writing done through the PhysicsFS API can leave a defined write directory. For file reading, a search path with archives and directories is defined, and it becomes a single, transparent hierarchical file system. So archive files can be accessed in the same way as you access files directly on a disk, and it makes it easy to ship a new archive that will override a previous archive on a per-file basis.

libccd is library for a collision detection between two convex shapes. libccd implements variation on Gilbert–Johnson–Keerthi algorithm plus Expand Polytope Algorithm (EPA) and also implements algorithm Minkowski Portal Refinement (MPR, a.k.a. XenoCollide) as described in Game Programming Gems 7.

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.

The Graphics Resource File (GRF) development tools are a set of tools for developing (New)GRFs. It includes a number of smaller programs, each with a specific task:

1. grfcodec decodes and encodes GRF files for OpenTTD.

2. grfid extracts the so-called "GRF ID" from a GRF.

3. grfstrip strips all sprites from a GRF.

4. nforenum checks NFO code for errors, making corrections when necessary.

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

Pygame-CE is a fork of the upstream pygame project by its former core developers. It aims to offer more frequent releases, continuous bugfixes and enhancements, and a new governance model.

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.

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".

LÖVE is a Lua framework for making 2D games. Nuklear is a minimal state immediate mode graphical user interface toolkit. This package is the Nuklear bindings for LÖVE created by Kevin Harrison.