FreeCS is a free-software reimplementation of Counter-Strike 1.5.
https://ahmed-mo2nis.itch.io/the-three-musketeers
3D playground built on three.js and cannon.js
Explore and dissect a complete brain model in VR
Engage is a free and open source space shooter game.
The imaginary eight-bit machine
JPHP - an implementation of PHP on Java VM
A RPG maker engine using Pygame
Modern 3D engine and IDE written using C# and C++.
KlayGE is a cross-platform open source game engine
A distributed graph deep learning framework.
An engine for describing games built around Xerces, exprtk, and SFML
RPG dice roll simulator for vintage Tandy TRS-80 100/102/200 laptops
A fun realistic multiplayer free-and-open-source first-person-shooter!
A complete framework for Godot to create beautiful and complex AI
Remake of The Secrets of Dyrt
A 2D game engine and level editor
A cross-platform 2D game engine
Small tool to dump/convert/ripping physical CD or virtual images
An opinionated 2D game engine for Rust
Planimeter Game Engine 2D - LÖVE-based game engine for Lua
8-bit Graphical API for Java
higan is a multi-system emulator focused on accuracy & preservation
IGS Labs