fheroes2 is a recreation of Heroes of Might and Magic II game engine
Open source clone of the Age of Empires II engine
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
Dust3D is a cross-platform open-source 3D modeling software
3D Procedural Game Engine Using OpenGL
Powerful, mature open-source cross-platform game engine for Python
3D Engine with Blender Integration
Skript is a Bukkit plugin which allows server admins
Open-source engine for Heroes of Might and Magic III
Vulkan renderer mod for Minecraft
RenderDoc is a stand-alone graphics debugging tool
Write your game with TypeScript in UE or Unity
Magic Another Game Engine
3D game engine/framework in C, with Luajit and Python bindings now
A multi core friendly rigid body physics and collision detection lib
Java/JavaFX/Kotlin Game Library (Engine)
LayaAir is an open-source 2D/3D engine
Animation Compression Library
An open source C++ game engine
Lightweight, high-performance HTML renderer for game developers
3D Game engine with editor
Ct.js is a desktop game engine that makes learning programming fun
A pure Go game engine
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An easy to use 2D HTML5 game engine written in TypeScript