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
s&box is a modern game engine, built on Valve's Source 2
Self-hosted game stream host for Moonlight
Xash3D FWGS engine
The main repository for the Linux and Mac OS Bedrock edition Minecraft
A complete 3-D game development suite written in Java
The Modrinth monorepo containing all code which powers Modrinth
Cocos simplifies game creation and distribution with Cocos Creator
A cross-platform PSP emulator
An Open Source Minecraft Launcher with Modern UX
Open source cross-platform multi-purpose game toolkit
A certain block game
Set of Python modules designed for writing video games
A lightweight, modular and versatile mod loader for Minecraft Bedrock
Voxel game-creation platform with easy modding and game creation
A high performance and high compatibility 1.12.2/1.16.5/1.18.2 version
A bridge/proxy allowing you to connect to Minecraft
Desktop/Android/HTML5/iOS Java game development framework
Powerful, mature open-source cross-platform game engine for Python
Cross-platform rhythm game for the keyboard
Open Source MMORPG Framework
Make Minecraft Java Edition mods, Minecraft Bedrock Edition Add-Ons
Mod manager for the video game RimWorld