DOSBox Staging is a modern continuation of DOSBox
An open source reimplementation of the Among Us Server
A framework to build Pokémon RPG games
Java/JavaFX/Kotlin Game Library (Engine)
An updated version of the classic "Basic Computer Games" book
Simple GTK# Paint Program
Solar2D Game Engine main repository (ex Corona SDK)
Gideros Release version
Open Source MMORPG Framework
Real Time Strategy game engine supporting early Westwood classics
Google maps for block game
A complete 3-D game development suite written in Java
A charting and data visualization library for Unity
An open source re-implementation of RollerCoaster Tycoon 2
A modern shaders mod for Minecraft compatible with existing OptiFine
HTML5 Canvas Tower Building Game
Self-hosted CMS platform based on the Laravel PHP Framework
A game framework written with osu! in mind.
3D game engine/framework in C, with Luajit and Python bindings now
Stride (formerly Xenko), a free and open-source cross-platform C# game
Jazz² Resurrection: Open-source reimplementation of Jazz Jackrabbit 2
A game engine powered by python and panda3d
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Ct.js is a desktop game engine that makes learning programming fun
CTFs as you need them