A complete 3D authoring tool which includes all the features you need for creating games for multiple platforms

A free, all-in-one platform for game creators

C++ Coding Framework for Windows, Linux, macOS and Browser games

A collection of tools and code for SEGA Master System, Game Gear, SG-1000/SC-3000 and ColecoVision homebrew development using 'C' language (and the SDCC compiler).

A rust, lightweight ECS Game Engine.

"Esenthel" is a mix of words: Essential and Essence, with a touch of magic

A small, 3D game engine/framework in C, with Luajit and Python bindings

HTML5 2D and isometric scenegraph-based game engine written entirely in JavaScript

A Javascript game programming library that helps you make games fast and fun.

A simple and easy to use game library for Rust programming language, heavily inspired by raylib.

A no-code, easy to develop game engine

An engine that provides a WebGL 2D rendering, a web authoring tool for animation production, and a framework to support team development

A fantasy console for making, sharing and playing tiny games and other computer programs

An engine that allows you to build up your own action game with no programming knowledge necessary

Design scenes in Unity's editor. Write game logic in Lua. Export to real PlayStation 1 hardware or emulator with a single click.

An open-source HTML5 puzzle game engine

Pyrite64 is a visual editor + runtime-engine to create 3D games that can run on a real N64 console or accurate emulators.

A fantasy console by Shmuel and Morgan at CasualEffects for creating and playing retro-style video games on any device.

A tiny Javascript single-library engine that lets you create games and experiences inspired by the look and feel of a retro 80s computer

A C++20 cross-platform game framework, with emphasis on addressing pain points in existing game engines

Apple's first-party 3D engine

Roblox Studio is an all-in-one IDE that lets you create experiences that run on Roblox. It lets you reach millions of users using the Roblox app on console, desktop, and mobile devices.

A Unity3D-like environment to create WebXR enabled apps and games for the browser with three.js

C++ Game Engine based on Irrlicht 3D with upgraded Sound Engine, Physics Engine, and Particle Engine

A framework for 2D game development provided by Apple

SpriteWidget is a toolkit for building complex, high performance animations and 2D games with Flutter

T-Engine4 is a roguelike game engine operating in Lua and available for all major platforms

A game engine written in Common Lisp, meant to be more of a loose connection of components that can be fit together as required by any particular game

TRSE is a complete suite (IDE, compiler, programming language, resource editor) intended for developing games/demos for 8 / 16-bit line of computers, with a focus on the MOS 6502, the Motorola 68000, the (GB)Z80, the M6809 and the X86.

A collection of different sources - and some new creations - in a single application. It is a Vectrex Integrated Developement Environment.