UCI chess engine
Godot is a powerful cross-platform game engine
A safe home for all your data
Open source voxel game engine with support for survival and crafting
Speech recognition module for Python
RetroArch is a frontend for emulators, game engines and media players.
An open source C++ game engine
The game engine for everyone
Multiplatform C++ library for parsing and crafting of network packets
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Command-line translator using Google Translate, Bing Translator, etc.
Solar2D Game Engine main repository (ex Corona SDK)
Open-source engine for Heroes of Might and Magic III
Embeddable unity game engine view for Flutter
A cross-platform, open-source, pure C game engine for mobile game
Sources for OpenXR loader, basic API layers, and example code
.NET version of the Playwright testing and automation library
New Godot bindings for Swift
Urho3D Game engine
Kotlin extensions for the libGDX game framework
A JavaScript engine optimized for running React Native
Java/JavaFX/Kotlin Game Library (Engine)
KorGE Game Engine. Multiplatform Kotlin Game Engine & Korlibs
Chess training program playing gambits
Engo is an open-source 2D game engine written in Go