A certain block game
Free and open source real-time strategy game
Fully-functional open-source server implementation for Diablo 3
Telegram Bot API for Java
Source code repository of the FreeOrion project
Minecraft map editor and mod
Open-source Android/Desktop remake of Civ V
Magic Another Game Engine
An unofficial rules engine for the world's greatest card game
A bridge/proxy allowing you to connect to Minecraft
Fully async, multithreaded, predictive, open source, 3.01 reach
1.21.11 Lightweight Minecraft server
Empowering everyone to host fast and efficient Minecraft servers
A Minecraft server in Rust focused on a strong foundation
A high performance and high compatibility 1.12.2/1.16.5/1.18.2 version
Wrapper of syncthing for Android
A permissions plugin for Minecraft servers
Frankenstein lived
Apache IoTDB
Odamex is a free, cross-platform, modern client-server Doom engine
Cooperative multiplayer graphical RPG and adventure game
0 A.D. is a free, open-source, cross-platform real-time strategy game.
Arianne is an engine to develop multiplayer online games like Stendhal