Magic Another Game Engine
Fast and lightweight JavaScript game engine built on WebGL and glTF
2D game development library for Ruby and C++
A .NET ascii/ansi console engine written in C# for MonoGame and XNA
Embeddable unity game engine view for Flutter
Retro game engine for creating games like it's 1997
Opensource crossplatform Fallout 2 game engine writen in C++ and SDL
A Tile-based Game Engine written in C# mimicing retro consoles.
Vivid3D is an open-source 3D engine with powerful 2D UI.
3D Scene Builder
Vivid is a modern C++ 3D engine using OpenGL4+
Low-Level Game Engine for Retro Platforms
Game engine for playing tomb raider 1 - 5 levels.
online 4X browser game engine
Multi-platform game engine similar to old Megaman with a stage editor
A game engine written in the D programming language
Paintown is a 2d fighting game engine.
An advanced flexible game engine for Java.
An online multiplayer turn based strategy game and board game engine.