ZDoom is a family of enhanced ports of the Doom engine for running on modern operating systems. It runs on Windows, Linux, and OS X, and adds new features not found in the games as originally published by id Software.




ZDoom is a family of enhanced ports of the Doom engine for running on modern operating systems. It runs on Windows, Linux, and OS X, and adds new features not found in the games as originally published by id Software.




Moddio is a Multiplayer-First Game Engine. It has a built-in server-authoritative netcode, including snapshot interpolation and client-side reconciliation. It can support 50+ concurrent players or 300+ moving entities hosted on a $5/month VM.








Quest 6 is a full re-write of Quest, an interactive fiction app, to pure JavaScript. It's a framework for creating parser-based text adventures.



Multimedia JavaScript framework to create real cross-platform and hybrid game engines, games, emulators, multimedia libraries and apps.




The Atomic Game Engine features a cross-platform editor with deployment to Windows, OSX, Linux, WebGL, Android, and iOS. Applications can be built using JavaScript, TypeScript, native C++, and C# scripting is in development.


A free software game engine focusing on developing games faster, more modular and stable with true -1 day portability support.
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![Drag[en]gine screenshot 1](https://d4.alternativeto.net/5i0hLWidTJz2srubydJJz40bnzu0lCS28EPqYRL2f5g/rs:fill:309:197:1/g:no:0:0/YWJzOi8vZGlzdC9zL2RyYWctZW4tZ2luZV83ODc4NDBfZnVsbC5wbmc.jpg)
![Drag[en]gine screenshot 2](https://d4.alternativeto.net/GwscdgM32EbFTJ0NcJILoP1Umu3AJyb7xKWaQc87qeo/rs:fill:309:197:1/g:no:0:0/YWJzOi8vZGlzdC9zL2RyYWctZW4tZ2luZV80NDM2NDBfZnVsbC5qcGc.jpg)
With Board Game Arena you can play board games online with the whole world. It is a next generation game platform which makes online gaming simpler and more attractive:

MakerSCAD is a web-based parametric 3D design software with a block-based programming language to create objects for 3D printing, animations, games and websites.



LunarEngine (formerly Librebox) is an open-source game engine powered by Luau. It delivers a sandbox-style API and development model inspired by popular sandbox engines, so existing Luau code runs with minimal changes.

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




A revolutionary new tool for Visual Novel Creation aimed towards aspiring artists and writers to bring their stories to life.




Developed over more than two decades in collaboration with leading game developers, Havok Physics is a fast and high-performance physics engine for games.



A game engine written in Python, extending support across multiple GPU devices with 3D rendering, PBR Renderer and much more.


Tilengine is an open source, cross-platform 2D graphics engine for creating classic/retro games with tile maps, sprites and palettes. Its unique scanline-based rendering algorithm makes raster effects a core feature, a technique used by many games running on real 2D graphics...



Amethyst uses gfx-rs to render graphics with Vulkan or Metal. It is meant to be used for 2D and 3D, with various utilities for both types of games. It should be beginner friendly but also allow more advanced uses such as custom render passes and GLSL shaders.
The Grit Game Engine is an MIT-Licensed Open Source Game Engine that is highly scriptable via Lua. It supports huge open world maps and dynamically streams assets from disk. The Grit Game Engine is a community project to build a free game engine (and toolchain) for implementing...


Picotron is a Fantasy Workstation: a self-contained creative environment built for imaginary hardware. Create cute Lua apps that can be run inside Picotron as windowed userland processes, shared as cartridge files, or exported to stand-alone HTML apps.




The G3D Innovation Engine is a commercial-grade C++ 3D engine available as Open Source (BSD License). It is used in commercial games, research papers, military simulators, and university courses. G3D supports hardware accelerated real-time rendering, off-line rendering like ray...




Free Heroes of Might and Magic II (fheroes2) is a recreation of Heroes of the Might and Magic II game engine.








Duality is a modular 2D game engine / editor combo, written entirely in C# and built on top of an OpenGL backend. It's open source, features an open architecture that invites extensibility and technical ownership, and it embraces C# as a language rather than a scripting...




Cocos Creator is a complete package of game development tools and workflow, including a game engine (based on Cocos2d-x), resource management, scene editing, game preview, debug and publish one project to multiple platforms.


Unseen64 is an archive with info, screens and videos about beta and cancelled videogames, that were changed in the development or never released.
