A lightweight, multiplatform, free and open-source 2D game engine

An open and free library to develop programs for the Nintendo SNES using the C programming language.

Ikemen GO is an open source fighting game engine that supports resources from the M.U.G.E.N engine, written in Google’s programming language, Go.

Bitty Engine is an itty bitty game engine, with built-in editors, programmable in Lua.

A Lua based game engine with focus on ease of iterations and usage

Openspace3D enable users to explore 3D applications, from creating interactive and immersive experiences to simulating virtual environment, as well as designing professional mockups and developing video games

A fast, fun, free and open-source framework for Canvas and WebGL powered browser games

Luminoveau is an open-source C++ game engine designed for simplicity and reach — 2D and 3D, desktop to console, from your first game to your next release.

NeoAxis Engine is a versatile real-time platform for making 3D, 2D games and apps

MSXgl is a Game Library wrote in C and targeting MSX computers. The purpose of this library is to provide C programmers with the whole set of functionalities to make a game with high performance.

A free, all-in-one, cross-platform game engine that makes it easy for you to create 2D and 3D games.

A game engine built entirely on camera. Started as a YouTube video series, now live-streaming on Twitch

Luna Visual Novel Engine is a modern web-based game engine for creating visual novels visually, quickly, and easily. Designed for both beginners and professionals with an intuitive slider position interface. This latest version is a continuation of Luna Visual Novel Engine 1, with a simpler, lighter, and much easier to use interface and features.

Flecs is a fast and lightweight Entity Component System that lets you build games and simulations with millions of entities.

A quick and easy to use drag and drop retro game creator that can publish games as gameboy ROMs

pyglet is a powerful yet easy-to-use Python library for developing games and other visually rich applications on Windows, macOS, and Linux

Carimbo is a lightweight 2D game engine written in modern C++. It features Lua scripting and is designed for high-performance deployment across all major platforms.

Create 3D games faster with Uniday Studio's own engine, built for Python, visual scripting, and practical indie production.

A cross-platform Java game development framework based on OpenGL (ES) that works on Windows, Linux, macOS, Android, your browser and iOS

An open-source real-time 3D engine

The Nu Game Engine is a functional 2D and 3D cross-platform game engine built in F#

An easy-to-use engine that makes game design easy, regardless of background or skill level

A full-source code available and agile game engine

TilBuci is a free, open source tool to create interactive content, focused on building interactive narratives like visual novels.

A visual novel engine that helps you use words, images, and sounds to tell interactive stories that run on computers and mobile devices

A framework for cross-platform games

Unreal Engine enables game developers and creators across industries to realize next-generation real-time 3D content and experiences with freedom, fidelity, and flexibility

The AGS Editor is a Windows-based IDE for creating adventure games as quickly and easily as possible.

Axmol Engine is an open-source, C++ multi-platform engine designed for mobile devices, desktop, and Xbox, well-suited for 2D game development.

Inky is an editor for ink, inkle's markup language for writing interactive narrative in games and exports to HTML5