Plugin for IntelliJ IDEA that gives special support for Minecraft mods
Make Minecraft Java Edition mods, Minecraft Bedrock Edition Add-Ons
lua dev plugin for unreal engine 4 or 5
KorGE Game Engine. Multiplatform Kotlin Game Engine & Korlibs
Purpur is a drop-in replacement for Paper servers
A free and open source sudoku game for addicts to newbies
A charting and data visualization library for Unity
Action-adventure game originally released in 2013
The Tiny JavaScript Game Engine That Can!
Orx: Portable Game Engine
Game engine supporting many 3D/2D formats and graphic effects
An ASI plugin for Grand Theft Auto V
A performance profiler for Minecraft clients, servers, and proxies
A simulator for drones, cars and more, built on Unreal Engine
3D C++ Game Engine - yet another open source game engine
KlayGE is a cross-platform open source game engine
Easy fine console input/output for java
Example code for creating a 2D platform game in Java.
Open-DIS implements the IEEE DIS protocol in multiple languages.
plugin-based RPG manager in C++ and Qt5
Open Game Bootstrap
Bukkit Plugin