Pyxel is a game engine inspired by retro gaming consoles. It has a fixed 16-color palette, can hold up to 3 image banks and 8 tilemaps (256x256 pixels each) and 4 sound channels with 64 definable sounds. It also comes with a built-in image and sound editor.

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.

img2tim converts image files into PlayStation TIM textures. It uses FreeImage to read common formats such as PNG, BMP and JPEG, and can output 4-bit, 8-bit or 16-bit textures, with optional colour-key or alpha transparency. The image and its CLUT can be placed at a chosen VRAM position.

Map editor designed for use with The Dark Mod, a Thief-inspired game utilizing the idTech4 game engine.

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.

Recast is state of the art navigation mesh construction toolset for games.

• It is automatic, which means that you can throw any level geometry at it and you will get robust mesh out.

• It is fast which means swift turnaround times for level designers.

The Recast process starts with constructing a voxel mold from a level geometry and then casting a navigation mesh over it. The process consists of three steps, building the voxel mold, partitioning the mold into simple regions, peeling off the regions as simple polygons.

Recast is accompanied with Detour, path-finding and spatial reasoning toolkit. You can use any navigation mesh with Detour, but of course the data generated with Recast fits perfectly.

Detour offers simple static navigation mesh which is suitable for many simple cases, as well as tiled navigation mesh which allows you to plug in and out pieces of the mesh. The tiled mesh allows you to create systems where you stream new navigation data in and out as the player progresses the level, or you may regenerate tiles as the world changes.

Godot is an advanced multi-platform game engine written in C++. If features design tools such as a visual editor, can import 3D models and provide high-quality 3D rendering, it contains an animation editor, and can be scripted in a Python-like language.

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.

OpenVR is an API and runtime that allows access to VR hardware from multiple vendors without requiring that applications have specific knowledge of the hardware they are targeting.

SurgeScript is a dynamically typed object-oriented scripting language designed for games. Each object is a state machine that can be customized by attaching other objects. The language supports automatic garbage collection and can be extended with plugins.

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.

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.

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.

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.

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.

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

mc2mt is a Minecraft to Minetest world converter. It can convert worlds from Minecraft 1.9 and later.

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.

All Things Devours is a short piece of sci-fi interactive fiction, leaning strongly towards the text-adventure end of the spectrum. Any move you make may put things into an unwinnable state. You are therefore encouraged to save frequently, and also to realise that you will probably have to start over several times to find the most satisfactory ending.

Adanaxis is a fast-moving first person shooter set in deep space, where the fundamentals of space itself are changed. By adding another dimension to space this game provides an environment with movement in four directions and six planes of rotation. Initially the game explains the 4D control system via a graphical sequence, before moving on to 30 levels of gameplay with numerous enemy, ally, weapon and mission types. Features include simulated 4D texturing, mouse and joystick control, and original music.

vcmi is an implementation of the Heroes of Might and Magic III game engine. It requires assets and game resources to play; it will look for them at ~/.local/share/vcmi folder.

Space is a vast area, an unbounded territory where it seems there is a room for everybody, but reversal of fortune put things differently. The hordes of hostile creatures crawled out from the dark corners of the universe, craving to conquer your homeland. Their force is compelling, their legions are interminable. However, humans didn't give up without a final showdown and put their best pilot to fight back. These malicious invaders chose the wrong galaxy to conquer and you are to prove it! Go ahead and make alien aggressors regret their insolence.

POWWOW is a client software which can be used for telnet as well as for Multi-User Dungeon (MUD). Additionally it can serve as a nice client for the chat server psyced with the specific config located at http://lavachat.symlynx.com/unix/

Curse of War is a fast-paced action strategy game originally implemented using ncurses user interface. An SDL graphical version is also available.