fheroes2 is a recreation of Heroes of Might and Magic II game engine
The HTML5 Creation Engine
3D Procedural Game Engine Using OpenGL
A pure Go game engine
Open source library for creative expression on the web, desktop, etc.
3D and 2D game engine written in Rust
GemRB is a portable open-source implementation of the Infinity Engine
A tool to easily transform Unreal Engine games into VR experiences
Cross-platform 2D game engine (+ full OpenGL, +full OpenGL ES )
Game engine supporting many 3D/2D formats and graphic effects
Old-school 2D game engine
A Complete WebGPU Game Engine for Browser & Desktop Arcade Oriented
The world is no longer the same
utility collection for 2D game development in Java; sound-player
Orx: Data-Driven Game Engine
API (C#) for simulating certain aspects of a ZX spectrum for porting.
A cell-based puzzle game featuring classic and completely new puzzles
Full featured MUD server with all the trimmings.
Here we're trying to create the easiest open-source game engine.
PyCAPGE - Python Classic Adventure Point and Click Game Engine
Haskell game engine library for roguelike dungeon crawlers