A Minecraft mod that adds Farmer's Delight compatibility for Fabric Seasons

Python API for beam dynamics simulation, data acquisition, data IO, data processing and optimization for particle accelerators.

Open source recreation of Daggerfall in the Unity engine

The TI-Nspire calculator extension for native applications

Quake 2 GPL Source Release

Header only C++11 tiny glTF 2.0 library

Dagor Engine and Tools source code from Gaijin Games KFT

Leak of CS:GO Source code, provided by yours truly so go rep me

Lua C++ wrapper, an easy way to add lua scripting capabilities to an existing C++ project.

rhythm is just a *click* away!

A free and open-source Touhou Project fangame

DOOM Open Source Release

Algorithms for blazingly fast data analysis at scientific user facilities

Qt-based graphics library for interactive live data visualisation and analysis

3D engine with modern graphics

Audio playback and capture library written in C, in a single source file.

A decompilation of Perfect Dark. (MIRROR of https://gitlab.com/ryandwyer/perfect-dark)

Cross-platform, graphics API agnostic, "Bring Your Own Engine/Framework" style rendering library.

openblack is an open-source game engine that supports playing Black & White (2001).

Quake GPL Source Release

This mod lets you play MGS2: Substance with the 3rd person camera (and game controls) from MGS3: Subsistence

Simple Directmedia Layer

A multi core friendly rigid body physics and collision detection library. Written in C++. Suitable for games and VR applications. Used by Horizon Forbidden West.

Godot Engine – Multi-platform 2D and 3D game engine

A fast and lightweight 2D game physics library.

A game engine/library made using SDL2

Fast data visualization and GUI tools for scientific / engineering applications