Stride (formerly Xenko), a free and open-source cross-platform C# game
ThinkPHP Framework
You can make it - Open Source MMORPG Platform
A modern shaders mod for Minecraft compatible with existing OptiFine
DeSmuME is a Nintendo DS emulator
Includes the boilerplate code for a GenLayer use case implementation
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
A refreshingly simple data-driven game engine built in Rust
nvim plugin designed to make you better at Vim Movements
Multi-platform 2D and 3D game engine
A free/open source client and automation tool for Ragnarok Online
Purpur is a drop-in replacement for Paper servers
Futuristic Luau for every universe
Unity3D Client And C# Server Framework
Fork of Paper which adds regionized multithreading
PoC Minecraft client written in Javascript
Source code repository of the FreeOrion project
New Modpack with Gregtech, Thaumcraft and Witchery
Kitty-Tools is a Kahoot Cheating Client for all devices and interfaces
Free game engine for development of desktop, mobile, and web games
A high performance and high compatibility 1.12.2/1.16.5/1.18.2 version
HTML5 Canvas Tower Building Game
Archipelago Multi-Game Randomizer and Server
LayaAir is an open-source 2D/3D engine
A completely free, open-source, 2D game engine