1.4ian / GDevelop
🎮 Open-source, cross-platform 2D/3D/multiplayer game engine designed for everyone.
- game
- javascript
- gamedev
- game-development
- game-engine
- html5
- +13 more
Ranked by Attention Score: stars gained over the last 180 complete days
1–100 of 151 by Attention Score · May 9, 2026 – Nov 4, 2026 (UTC)
🎮 Open-source, cross-platform 2D/3D/multiplayer game engine designed for everyone.
Cataclysm - Dark Days Ahead. A turn-based survival game set in a post-apocalyptic world.
A PSP emulator for Android, Windows, Mac, Linux and iOS, written in C++. Want to contribute? Join us on Discord at https://discord.gg/5NJB6dD or just send pull requests / issues.
A retro game engine for Python
Luanti (formerly Minetest) is an open source voxel game-creation platform with easy modding and game creation
Official QEMU mirror. Please see https://www.qemu.org/contribute/ for how to submit changes to QEMU. Pull Requests are disabled. Please only use release tarballs from the QEMU website.
Fast PlayStation 1 emulator for x86-64/AArch32/AArch64/RV64
A Flash Player emulator written in Rust
Dolphin is a GameCube / Wii emulator, allowing you to play games for these two platforms on PC with improvements.
One framework for creating powerful cross-platform games.
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D engine that enables developers and content creators to build AAA games, cinema-quality 3D worlds, and high-fidelity simulations without any fees or commercial obligations.
Pterodactyl® is a free, open-source game server management panel built with PHP, React, and Go. Designed with security in mind, Pterodactyl runs all game servers in isolated Docker containers while exposing a beautiful and intuitive UI to end users.
The most widely used, high performance Minecraft server that aims to fix gameplay and mechanics inconsistencies
OpenTTD is an open source simulation game based upon Transport Tycoon Deluxe
Flexible level editor
The Unity Machine Learning Agents Toolkit (ML-Agents) is an open-source project that enables games and simulations to serve as environments for training intelligent agents using deep reinforcement learning and imitation learning.
Bitmap & tilemap generation from a single example with the help of ideas from quantum mechanics
Main game repository for Beyond All Reason.
Bullet Physics SDK: real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc.
Clone of the Age of Empires II engine 🚀
The official Open-Asset-Importer-Library Repository. Loads 40+ 3D-file-formats into one unified and clean data structure.
Original Xbox Emulator for Windows, macOS, and Linux (Active Development)
A high-performance rendering engine replacement for Minecraft, which greatly improves frame rates and reduces micro-stutter
An open-source fighting game engine that supports MUGEN resources.
Modifications to the Minecraft base files to assist in compatibility between mods. New Discord: https://discord.minecraftforge.net/
The main repository for the development of the evolution game Thrive.
Unity C# reference source code.
Windows 95 in an app. Runs on macOS, Linux, and Windows.
Open source clone of Theme Hospital
Bitburner source code.
xLua is a lua programming solution for C# ( Unity, .Net, Mono) , it supports android, ios, windows, linux, osx, etc.
BizHawk is a multi-system emulator written in C#. BizHawk provides nice features for casual gamers such as full screen, and joypad support in addition to full rerecording and debugging tools for all system cores.
The repository host gives no description.
Powerful, mature open-source cross-platform game engine for Python and C++, developed by Disney and CMU
Game Boy and Game Boy Color emulator written in C
A free and open-source Touhou Project fangame
A running-jumping-swordfighting game I made on the Apple II from 1985-89
Open-source C++ game engine with Lua for 2D and 3D games across mobile, desktop, WebAssembly, and Xbox (UWP).
A powerful free cross-platform RTS game engine. - Report issues at https://springrts.com/mantis/
Improved version of the X-Ray Engine, the game engine used in the world-famous S.T.A.L.K.E.R. game series by GSC Game World. Join OpenXRay! ;)
The command-line tool for quick, simple deployment and management of Linux dedicated game servers.
Command & Conquer: Remastered Collection
HeightMap terrain for Godot implemented in GDScript
Game Boy emulator written in Python
A custom launcher for Minecraft that allows you to easily manage multiple installations of Minecraft at once
🗺️ Minecraft map editor and mod
A Minecraft Mod about Matter, Energy and using them to conquer the world..
Stable repository of the modernized X-Ray 1.6 game engine
The source code to VVVVVV! http://thelettervsixtim.es/
Freedoom is an entirely free software game based on the Doom engine.
An updated version of GBDK, C compiler, assembler, linker and set of libraries for the Nintendo Gameboy, Nintendo Entertainment System, Sega Master System, Sega Game Gear.
Cross-platform (desktop, mobile, console, web) 3D and 2D game engine. Powerful visual editor. Support for glTF, X3D, IFC and more. Fast clean code using modern Pascal. Free and open-source.
A Minecraft world editor and converter that supports all versions since Java 1.12 and Bedrock 1.7.
Direct port of the Bullet physics engine to JavaScript using Emscripten
Easy to use Python library for creating 2D arcade games.
bsnes is a Super Nintendo (SNES) emulator focused on performance, features, and ease of use.
DDraceNetwork, a free cooperative platformer game
The official distribution of olcPixelGameEngine, a tool used in javidx9's YouTube videos and projects
In-browser falling-sand simulation game with over 500 elements and thousands of reactions.
The Cross Platform Game Engine
🌳 Plugin for procedural generation of 3D trees of varying complexity for Godot Engine.
A free J2ME emulator with libretro, awt and sdl2 frontends.
Freeciv-web is an Open Source strategy game implemented in HTML5 and WebGL, which can be played online against other players, or in single player mode against AI opponents.
Repository hosting the functional Nu Game Engine and related projects.
The Atomic Game Engine is a multi-platform 2D and 3D engine with a consistent API in C++, C#, JavaScript, and TypeScript
Fast paced HTML5 puzzle game inspired by Tetris!
A tech mod for Minecraft themed around the magic of nature and plant life.
Mirror of https://gitlab.com/xonotic/xonotic - Xonotic (superproject containing build scripts and tools to download other repositories and assets)
A retro multiplayer shooter
A free J2ME emulator with libretro, awt and sdl2 frontends.
The official Allegro 5 git repository. Pull requests welcome!
Wwise Integration for the Godot Engine
Plugin for Decky Loader to apply and manage custom art assets from within gaming mode.
Frogatto & Friends is an action-adventure game, starring a certain quixotic frog.
Construct dynamic and intuitive topbar icons. Enhance the appearance and behaviour of these icons with features such as themes, dropdowns and menus.
DEPRECATED - A HTML5/JavaScript multiplayer game experiment
Unvanquished is a free and open source FPS/RTS hybrid game powered by the Daemon game engine. Historically based on Tremulous as a continuation with decades of work over it.
Indie Turn Based Strategy in Isometric Voxel Art http://tof.p1x.in
Inspired by A Dark Room, A Dark Forest is an incremental experimental minimalistic idle game project.
2D HTML5 rendering and layout engine for game development
🛡️ Protect your Minecraft server and lets players claim areas
A tilemap editor for Game Boy, Color, Advance, DS, and SNES projects. Written in C++ with FLTK.
Indie Turn Based Strategy in Isometric Pixel Art
RakNet is a cross platform, open source, C++ networking engine for game programmers.
OpenLieroX - Liero clone / Worms realtime / 2D shooter
LUIS (Love2D UI System) is a flexible graphical user interface (GUI) framework built on top of the Löve2D game framework. LUIS provides developers with the tools to create dynamic, grid-centric, layered user interfaces for games and applications.