A dead simple 2D game engine for Go
LayaAir is an open-source 2D/3D engine
Mangos ZERO is a server for World of Warcraft
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Contains the code for CM-SS13
A multithreaded Minecraft server built for redstone
Cross-platform 2D game engine focused on ultimate productivity
Descent 3 by Outrage Entertainment
OpenSoldat is a unique 2D (side-view) multiplayer action game
Widelands is a free, open source real-time strategy game
HTML5 Phigros chart player/simulator
A game engine with an emphasis on real-time cutting-edge solutions
A fancy self-hosted monitoring tool
A Flutter based game engine
A charting and data visualization library for Unity
Netcode that provides networking capabilities to GameObject workflows
Ct.js is a desktop game engine that makes learning programming fun
Traditional roguelike game with pixel-art graphics
ThinkPHP Framework
You can make it - Open Source MMORPG Platform
A lightweight game server framework implemented with Actor Model
Examples for 3DS using devkitARM, libctru, citro3d and citro2d
High performance UI layout library in C
Cross-Platform C++ 2D/3D game engine
Godot Minimal Theme