A powerful, beautiful, simple, and open web rendering engine

Crown is a complete and cross-platform game engine designed for flexibility, performance, and fast-iterations.

A game engine for high-performance cross-platform games

Free software game engine focusing on developing games faster

Pixi’VN is a versatile and powerful visual novel/2D game engine. It is based on JavaScript/TypeScript and uses the PixiJS library for rendering.

A visual programming language inspired by Scratch.

A game engine with an emphasis on real-time cutting-edge solutions

An open source HTML5 game engine that empowers developers and designers to focus on content

A web-first game engine

s&box is a spiritual successor to Garry’s Mod, using Source 2 to create a modern, intuitive, moddable game development environment.

A free and open source fantasy computer for making, playing and sharing tiny games

A cross-platform creator for classic role-playing-games (RPGs). It’s main aim is to create games similar to the RPGs of the 80’s and 90’s but with modern features as well as support for single and multi-player experiences.

A free game engine written in TypeScript for making 2D games in HTML5 canvas, whether you're new to game development or you're an experienced game developer.

Kaiju is a game development platform where all game scripting and logic is written in Go, combining the performance of a compiled language with the simplicity of modern syntax

RouteVN Creator is a free, open-source tool that lets anyone, writers, artists, hobbyists to create their own Visual Novels. No coding or technical background required.

A dead simple 2D game engine for Go

RPG Paper Maker allows you to create a 3D RPG with 2D sprites and 3D objects with a very simple interface

A custom-made game engine based on the Raylib Framework. The Main focus is being performant and only using draw functions instead of textures. When using Shape Engine everything from Raylib is available as well.

Simple DirectMedia Layer is a cross-platform development library designed to provide low level access to audio, keyboard, mouse, joystick, and graphics hardware via OpenGL and Direct3D. It is used by video playback software, emulators, and popular games including Valve's award winning catalog and many Humble Bundle games.

FNA is a reimplementation of the Microsoft XNA Game Studio 4.0 Refresh libraries

Redot Engine is an open source fork of Godot with the goal of fulfilling the promise of Godot.

ECS based game engine originally created for space station 14 but other games are supported. It is intended for multiplayer games and it is possible to sandbox the client.

Ceramic is a cross-platform framework that lets you create 2D apps and games written in the Haxe programming language. It can export your app natively to Windows, Mac, Linux, iOS, Android, HTML5/WebGL and even Unity projects!

Volta is a WIP 2D game development framework for Luau written in C++. It is cross platform, currently only officially supports Windows, Linux and macOS (though macOS has no official builds, so you will have to compile the framework yourself for it). Android and iOS support is planned in the future.

A free and open-source, cross-platform game engine for creating 2D and 3D projects with Lua or C++. It is lightweight and promotes the simplest way to use the best performance of a data-oriented design.

An open-source SDK for Nintendo 64. It aims for a complete N64 programming experience while providing programmers with modern approach to programming and debugging.

A no-code, open-source, free, and easy 2D/3D game-making app

A game development tool that allows anyone to enjoy creating RPGs with intuitive operation and advanced features without programming

Usagi is a 2D game engine for making pixel art games in Lua 5.5. It features live reload, single-command cross-platform export, and a pause menu with input remapping built in.

Cross platform 2D games based on the Qt framework.