s&box is a modern game engine, built on Valve's Source 2
A rhythm game made with HaxeFlixel
A completely free, open-source, 2D game engine
Open source library for N64 development
JavaScript-based game engine designed to empower developers
Fast and lightweight JavaScript game engine built on WebGL and glTF
Descent 3 by Outrage Entertainment
Open source library for creative expression on the web, desktop, etc.
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Go bindings for raylib, a simple and easy-to-use library
Zoomable user interface (ZUI) with file manager, file viewers and more
Open and edit the archive files used in over 5700 games.
JavaScript framework to build game engines, games, emulators and apps
cross-platform sound-playing package for C++ apps
A c++ public domain audio output class
Modern 3D engine and IDE written using C# and C++.
2D Game Engine with Lua Scripting made on top of SFML
A real-time game development platform
A starter development kit that let you develop FF6-like games on PC.
Open-source, cross-platform, C++ game engine for creating 2D/3D games
3D .NET engine for Windows, Linux, Mac
A pygame music lib.
a game library to develop audio games