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.

A 2D-oriented, data-driven, portable game engine focused primarily on ease of use and powerful features

A simple and easy-to-use library to enjoy videogames programming

Game engine written in D, mainly for retro pixelart style games. Has software synthesizers for audio.

Tomb Engine is a reimplementation of the Tomb Raider engine, for the creation of custom levels.

A feature-rich, production-ready, general purpose 2D/3D game engine written in Rust with a scene editor

JavaScript game engine that uses q5.js/p5.js for graphics and Box2D for physics. p5play was designed by Computer Science teachers to be intuitive for beginners, making it popular at schools and universities around the world.

An open-source 3D game engine focused on portability, minimal footprint and performance, and integrated in Blender

A persistent state container and rules engine for the simulation in Paradox or Maxis style games.

A simple and easy-to-use framework for writing small games and prototyping in C#.

Allegro is a cross-platform library mainly aimed at video game and multimedia programming. It handles common, low-level tasks such as creating windows, accepting user input, loading data, drawing images, playing sounds, etc. and generally abstracting away the underlying platform.

Cross-platform (desktop, mobile, console) 3D and 2D game engine

Cute Framework (CF) is a framework available for making 2D games in C++. It provides a portable foundational layer for building 2D games in C/C++ without baggage, gnarly dependencies, or cryptic APIs.

Open Surge Engine is an open-source 2D retro game engine for creating games using SurgeScript, a scripting language for games.

Capsule VN Engine is a lightweight, no-code game development tool designed for the creation and distribution of 2D visual novels using web technologies.

A scene-oriented, flexible 3D engine written in C++ designed to make it easier and more intuitive for developers to produce games and demos utilising 3D hardware

An easy-to-learn Python library for creating 2D video games, ideal for people learning to program, or developers that want to code a 2D game without learning a complex framework

An open-source, completely free-to-use engine for realtime 3D games, visualizations, simulations, experiments

A multi-platform Vulkan / WebGPU / OpenGL game engine that works on Desktop Java, Android and browsers.

Pine is a Java ECS-based game engine that uses the LWJGL library to provide a high-level and developer-friendly framework on top of native libraries.

A next-gen game development platform designed to empower developers and artists.

A cross-platform game engine used worldwide. The engine can be used to create three-dimensional (3D) and two-dimensional (2D) games, as well as interactive simulations.

Mini Micro is a fantasy console, with a programming language literally designed to be easy to learn.

Matali Physics is an advanced, modern, multi-platform, high-performance 3d physics environment intended for games, VR, AR, physics-based simulations and robotics.

FTEQW is an advanced and portable Quake engine. It supports multiple games running on idTech, plus its own set of games that developers have created.

Range Engine an open source engine that runs as a modified version of Blender

Hot Soup Processor is an interpreter used for developing 2d and 3d games, starting development since NEC PC88 times

A powerful, C++ engine, built on literal decades of proven torque technology