Game development

Open-source projects categorized as Game development

Top 23 Game development Open-Source Projects

  • Godot

    Godot Engine – Multi-platform 2D and 3D game engine

    Project mention: Error: Timer was not added to the SceneTree. Either add it or set autostart to true. I have no timer in any scene. | /r/godot | 2023-11-29

    Editing project: /home/noone/ABitTest2 Godot Engine v4.2.rc2.official.1ba920fad - /lib/x86_64-linux-gnu/ undefined symbol: xkb_utf32_to_keysym /lib/x86_64-linux-gnu/ undefined symbol: xkb_keymap_key_get_mods_for_level Vulkan API 1.1.182 - Forward+ - Using Vulkan Device #0: Unknown - llvmpipe (LLVM 12.0.0, 256 bits) WARNING: lavapipe is not a conformant vulkan implementation, testing use only. noone@noone-System-Product-Name:~/Godot4_0$ ERROR: Timer was not added to the SceneTree. Either add it or set autostart to true. at: start (scene/main/timer.cpp:109)

  • Phaser

    Phaser is a fun, free and fast 2D game framework for making HTML5 games for desktop and mobile web browsers, supporting Canvas and WebGL rendering.

    Project mention: Not only Unity... | /r/opensourcegames | 2023-11-11

    Phaser (MIT/JS)

  • InfluxDB

    Collect and Analyze Billions of Data Points in Real Time. Manage all types of time series data in a single, purpose-built database. Run at any scale in any environment in the cloud, on-premises, or at the edge.

  • bevy

    A refreshingly simple data-driven game engine built in Rust

    Project mention: Not only Unity... | /r/opensourcegames | 2023-11-11
  • libGDX

    Desktop/Android/HTML5/iOS Java game development framework

    Project mention: OSS Game Engines are increasing their stars on GitHub due to Unity's missteps | | 2023-09-19

    For anyone interested, LibGDX[1] is a very nice open-source game engine for Java. It is cross-platform (mobile, PC/mac, web). Very popular and well maintained, too.


  • BabylonJS

    Babylon.js is a powerful, beautiful, simple, and open game and rendering engine packed into a friendly JavaScript framework.

    Project mention: Not only Unity... | /r/opensourcegames | 2023-11-11
  • games

    :video_game: A list of popular/awesome video games, add-ons, maps, etc. hosted on GitHub. Any genre. Any platform. Any engine.

    Project mention: Games on Github - A list of popular/awesome video games, add-ons, maps, etc. hosted on GitHub. Any genre. Any platform. Any engine. | /r/opensourcegames | 2023-06-26
  • Cocos2d

    Cocos2d-x is a suite of open-source, cross-platform, game-development tools utilized by millions of developers across the globe. Its core has evolved to serve as the foundation for Cocos Creator 1.x & 2.x.

    Project mention: Not only Unity... | /r/opensourcegames | 2023-11-11
  • Onboard AI

    Learn any GitHub repo in 59 seconds. Onboard AI learns any GitHub repo in minutes and lets you chat with it to locate functionality, understand different parts, and generate new code. Use it for free at

  • egui

    egui: an easy-to-use immediate mode GUI in Rust that runs on both web and native

    Project mention: Rerun 0.9 – a framework for visualizing streams of multimodal data | | 2023-10-05

    The creator of Rerun (Emil Ernerfeldt) also created egui [1], an immediate GUI library for Rust. The library is similar to Dear ImGui but it is written in Rust and can be used for desktop and web apps (compiles to WASM and uses WebGL, demo [2]). Desktop apps can target OpenGL (does not display correct colors on macOS, does not work in VirtualBox on Windows) or WGPU (uses native APIs for each platform, works without any problems, but the binary is a big larger).


  • raylib

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

    Project mention: Advice for managing a group of beginner C programmers, myself included | /r/C_Programming | 2023-11-21
  • 3d-game-shaders-for-beginners

    🎮 A step-by-step guide to implementing SSAO, depth of field, lighting, normal mapping, and more for your 3D game.

    Project mention: Random Code Inspiration Volume 2 | | 2023-10-01
  • A-Frame

    :a: Web framework for building virtual reality experiences.

    Project mention: The Future of Node.js in Virtual and Augmented Reality Development | | 2023-07-19

    Traditionally, VR and AR development involved complex frameworks and languages, but Node.js brings a fresh approach to the table. Its familiarity with JavaScript allows developers to write code for VR and AR applications with ease. By utilizing libraries like A-Frame for VR and AR.js for AR, developers can create immersive experiences directly in the browser using Node.js. This seamless integration opens up opportunities for a wider range of developers to enter the VR and AR landscape.

  • pyxel

    A retro game engine for Python

    Project mention: Pyxel is a retro game engine for Python | | 2023-11-25
  • magictools

    :video_game: :pencil: A list of Game Development resources to make magic happen.

  • openage

    Free (as in freedom) open source clone of the Age of Empires II engine :rocket:

    Project mention: Openage v0.5.0 | | 2023-10-04
  • Bullet

    Bullet Physics SDK: real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc.

    Project mention: Does anyone know any good open source project to optimize? | /r/cpp | 2023-06-07

    I suspect most C++ physics libraries like Box2D ( or Bullet3 ( could really benefit a lot from SIMD.

  • MonoGame

    One framework for creating powerful cross-platform games.

    Project mention: The MonoGame Foundation launch | /r/monogame | 2023-11-15

    To highlight this shift, we are introducing a new website which is now fully automated with Github. The paint is still fresh, but we hope to expand it with more information about the MonoGame Foundation, like how it operates, and how to join it or contribute.

  • tiled

    Flexible level editor

    Project mention: How to build maps efficiently | /r/gamedev | 2023-11-27

    A more sophisticated approach may be to use something like Tiled (, but it typically takes a lot of code to to parse a Tiled map, so I wouldn’t start there. The exact needs of your game will dictate the approaches you use. Starting simple means you can make good, visible progress getting your game to work. And I’m sure that plenty of real games have shipped where the levels are just text files.

  • assimp

    The official Open-Asset-Importer-Library Repository. Loads 40+ 3D-file-formats into one unified and clean data structure.

    Project mention: The Asset-Importer-Lib Minor Release Version 5.3.0 is out | /r/GraphicsProgramming | 2023-09-26
  • Ebiten

    Ebitengine - A dead simple 2D game engine for Go

    Project mention: Making Games in Go for Absolute Beginners | | 2023-11-24

    I love Go, yet I've never thought of it as a language with usable game engines. I'm extremely happy to find I was very wrong about that!

    I'm woefully behind the curve on compiling to WASM, though, and I've yet to experiment much with tinygo so I have no idea how far I would get in creating a game people could enjoy in a browser without having to download a big bundle of assets. It's reassuring to see WASM mentioned explicitly as a compilation target [1] by Ebitengine though.


  • entt

    Gaming meets modern C++ - a fast and reliable entity component system (ECS) and much more

    Project mention: Focus: A simple and fast text editor written in Jai | | 2023-09-02 This is a very small experiment i did to learn the metaprogramming features. its an ECS library using the same model as entt ( In 200 lines or so it does the equivalent of a few thousand lines of template heavy Cpp while compiling instantly and generating good debug code.

    Some walkthrough:

    Line 8 declares a SparseSet type as a fairly typical template. its just a struct with arrays of type T inside. Next lines implement getters/setters for this data structure

    Line 46 Base_Registry things get interesting. This is a struct that holds a bunch of SparseSet of different types, and providers getters/setters for them by type. It uses code generation to do this. The initial #insert at the start of the class injects codegen that creates structure members from the type list the struct gets on its declaration. Note also how type-lists are a native structure in the lang, no need for variadics.

    Line 99 i decide to do variadic style tail templates anyway for fun. I implement a function that takes a typelist and returns the tail, and the struct is created through recursion as one would do in cpp. Getters and setters for the View struct are also implemented through recursion

    Line 143 has the for expansion. This is how you overload the for loop functionality to create custom iterators.

    The rest of the code is just some basic test code that runs the thing.

  • engine

    Fast and lightweight JavaScript game engine built on WebGL and glTF

    Project mention: List of Unity alternatives | /r/gamedev | 2023-09-19
  • flame

    A Flutter based game engine.

    Project mention: Hi Flutter Devs, I am struggling to make a background for my app that is extremely high fidelity lava lamp bubbles - 3d, viscous, blobby, neon glow-y, lava lamp bubbles. | /r/flutterhelp | 2023-07-07

    Check out Flame -

  • GameNetworkingSockets

    Reliable & unreliable messages over UDP. Robust message fragmentation & reassembly. P2P networking / NAT traversal. Encryption.

    Project mention: Microsoft wins FTC fight to buy Activision Blizzard | /r/gaming | 2023-07-11

    Halo was mostly all about single player and early multiplayer/local multiplayer but their online netcode has sucked since Blood Gulch. Lots of games do networking horribly, I have been in gamedev making networking and I hate most of what people do. The ones that have a clean natting, based on enet style reliable UDP channels, RakNet style punch are better (RakNet was good until Facebook bought it). It has come a long way but also fallen back. Valve source netcode (on github) is probably the best and you can check it out here. They started with the best in Quake networking, then to Source.

  • SaaSHub

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2023-11-29.

Game development related posts


What are some of the best open-source Game development projects? This list will help you:

Project Stars
1 Godot 78,113
2 Phaser 35,571
3 bevy 28,569
4 libGDX 22,222
5 BabylonJS 21,718
6 games 21,682
7 Cocos2d 17,608
8 egui 17,441
9 raylib 16,382
10 3d-game-shaders-for-beginners 16,351
11 A-Frame 15,850
12 pyxel 12,690
13 magictools 12,329
14 openage 12,107
15 Bullet 11,341
16 MonoGame 10,339
17 tiled 10,228
18 assimp 9,749
19 Ebiten 9,116
20 entt 8,950
21 engine 8,788
22 flame 8,347
23 GameNetworkingSockets 7,544
SaaSHub - Software Alternatives and Reviews
SaaSHub helps you find the best software and product alternatives