Game engine supporting many 3D/2D formats and graphic effects
lua dev plugin for unreal engine 4 or 5
Arianne is an engine to develop multiplayer online games like Stendhal
Old-school 2D game engine
Orx: Portable Game Engine
The imaginary eight-bit machine
8-bit Graphical API for Java
A cross platform Lua based game engine
A complete web framework to create online Fighting Fantasy adventures
Portable game engine with main focus on point-and-click adventures
Build Cross-platform Applications
3D .NET engine for Windows, Linux, Mac
Flexible and easy-to-use 2d game engine
A game engine written in the D programming language
An advanced flexible game engine for Java.
Java decentralized cross-platform network multiplayer game engine
Free strategy browsergame engine.
Multimedia asset management and manipulator for Étoilé
A 2D Adventure Game & Engine
A generic 2D engine for any kind of game
Library for creating turn-based games with simultaneous moves.
TR Game Engine allows you to develop your game quickly and easily.
Take the chess graphism, and use it with a chess engine.