A Native GOG and Epic Games Launcher for Linux, Windows and Mac
You can make it - Open Source MMORPG Platform
A Minecraft Launcher which is multi-functional, cross-platform
Godot is a powerful cross-platform game engine
Scripting platform, modding framework and VR support for RE Engine
A cross-platform PSP emulator
The main repository for the Linux and Mac OS Bedrock edition Minecraft
Lutris desktop client in Python
Xash3D FWGS engine
A complete 3-D game development suite written in Java
Self-hosted game stream host for Moonlight
A Minecraft Java Edition Launcher for Android and iOS
Set of Python modules designed for writing video games
Voxel game-creation platform with easy modding and game creation
One framework for creating powerful cross-platform games
Cross-platform rhythm game for the keyboard
s&box is a modern game engine, built on Valve's Source 2
Stream switch games to your PC via USB or network
Allows the connection of newer clients to older server versions
Cross-platform 2D and 3D game engine with modular architecture
Open Source MMORPG Framework
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Desktop/Android/HTML5/iOS Java game development framework
Cross-Platform C++ 2D/3D game engine
Lightweight console for Minecraft chat and automated scripts