Desktop/Android/HTML5/iOS Java game development framework
lua dev plugin for unreal engine 4 or 5
OgreWin3D
Vivid3D is a C++ IDE/3D engine, with python scripting.
Orx: Portable Game Engine
Updated emulator of Forgotten Realms: Unlimited Adventures
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
A 2D game engine and level editor
A real-time game development platform
Lego Island 2 Game Editor
2D ARPG Engine
computer simulation for my raspberry pi
Open Game Bootstrap
evolution for vegastrike SpaceSim/Combat/Trade game
Animation graph editor.
Cross-platform C framework very compact libraries and tools.
A generic 2D engine for any kind of game
3D Game engine
Multi-threaded 2D Renderer licensed under the Mozilla Public License
C++ Framework for slot machine games
A game development kit for Sifteo Cubes.
A retro style video game engine for RPGs and adventure games.