RetroArch is a frontend for emulators, game engines and media players.
A cross-platform PSP emulator
A GUI based Nintendo Switch Bootloader
Atmosphère is a work-in-progress customized firmware for the Nintendo
Mangos ZERO is a server for World of Warcraft
The Playstation 2 emulator
An iOS & tvOS Frontend for Multiple Emulators
The game engine for everyone
Compatibility tool for Steam Play based on Wine and other components
Set of Python modules designed for writing video games
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
The ioquake3 community effort to continue supporting/developing id's
16 bit real mod minecraft clone running in bios
New Godot bindings for Swift
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Mod manager for the video game RimWorld
Open source library for creative expression on the web, desktop, etc.
C# application with primary purpose of farming Steam cards
ThinkPHP Framework
Homebrew development library for Nintendo 3DS/Horizon OS user mode
dhewm 3 main repository
A free transportation simulator game
Stride (formerly Xenko), a free and open-source cross-platform C# game
Domination is a game that is a bit like the board game Risk
Inspecting and manipulating NBT as a file system