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Life & fun · alternatives · 2026

24 alternatives to Fully open-sourced online RPG without servers

Unity client application for Nine Chronicles, a fully decentralized idle RPG powered by the community. - planetarium/NineChronicles

This is an open-source online RPG that operates without traditional servers, allowing players to host and run the game independently. Launched in 2021, it is designed for people interested in role-playing games who… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Fully open-sourced online RPG without servers launched in 2021; newer entries below may have overtaken it.

  1. 1

    Site for Nine Chronicles Ecosystem Developers.

    2024 · nine-chronicles.dev · its alternatives →

  2. 2UL

    In the wake of all the Unity nonsense, just wanted to toss the Raverie engine into this mix :) We’re building off a previous engine that we worked on for DigiPen Institute of Technology called the Zero Engine with a similar component based design architecture to Unity. Our engine had a unique feature called Spaces: separate worlds/levels that you can instantiate and run at the same time, which became super useful for creating UI overlays using only game objects, running multiple simulations, etc. The lighting and rendering engine is scriptable, and the default deferred rendering…

    2023 · raverie-us.github.io · its alternatives →

  3. 3

    Develop open metaverse worlds and publish to any web server

    2022 · croquet.io · its alternatives →

  4. 4IB

    I've been working on an MMORPG that is now in alpha as a solo developer. Here are the major open source technologies that I use: Blender - 3D modeling software for creating the overall environment and every game object. I've gotten a lot of CC and Public Domain assets from https://poly.pizza GLTF - I export assets from blender to the GLTF asset format JSON - I write a JSON config for every game object that describes things like its name, its interactions, its collisions, etc. Node.js exporter - I iterate over the environment and every asset to create a scene hierarchy. I use…

    2024 · alpha.reconquer.online · its alternatives →

  5. 5

    Hello HN! We’re a small creative studio specializing in real-time 3D experiences. Netlify approached us to design and build an interactive experience to celebrate reaching 5 million developers. Inspired by the classic game Marble Madness, we created a gamified experience where users control a ball through playful, interactive levels. The goal was to blend marketing content with the look and feel of a game to engage users. The app is built with Three.js [1], using our custom render pipeline and shaders, and uses Rapier for physics simulation [2]. The 2D content is overlaid on the WebGL view…

    2024 · 5-million-devs.netlify.com · its alternatives →

  6. 6

    A replayable arcade shooter where you control a snake of heroes. - a327ex/SNKRX

    2021 · github.com · its alternatives →

  7. 7

    I'm making a platform for simple open source games you can play anywhere. Games are all just JavaScript classes and you can read the source of every game on the platform. I started working on initial "games" (mostly rendering tests) in 2018 and eventually built all of the platform stuff around it to make it easy to share games. There's also an in-browser editor available for you to make and publish games all from the browser. Would love some feedback on the games and studio features as well as the platform overall. All of the code is available at https://github.com/homegamesio

    Jul 2026 · homegames.io · its alternatives →

  8. 8

    Hey HN, this is a small project myself and closer friends have been building on our free time (https://github.com/Dr-Nekoma/lyceum), it finally reached 0.1.0, we are open to feedback! The original idea was to experiment with Zig + Raylib, eventually we wrote a small server in Erlang as well. We started by first interacting with Erlang via its C bindings, but this eventually led to some of us to prototyping our own tooling to better integrate Zig types with Erlang, we called such tool "zerl" as its avaliable here…

    2024 · github.com · its alternatives →

  9. 9

    Play games anywhere. Share them with anyone. With Roll20® as your virtual tabletop, your adventures are limitless.

    2012 · roll20.net · its alternatives →

  10. 10

    So just for fun, I wrote a complete multiplayer game in pure C++. I even wrote my own texture atlas packer, which is now used by Assassin's Creed, 2 scientific publications as well as a drone manufacturing company - each of these basically mentions the name of my game. There is even a claim that Unity patented some of the ECS ideas that originate from this project. See https://github.com/TeamHypersomnia/Hypersomnia#tech-highligh... for details. By the way the game is pretty darn good. 10 people connected yesterday to test a new map:…

    2023 · github.com · its alternatives →

  11. 11

    The website / "start here" for the project. This project has been abandoned and merged into the open source Raccoons Rise Up game. - The-MMORPG-Project/website

    2020 · github.com · its alternatives →

  12. 12IM

    I've posted this game here before, hopefully a repost is fine as the game has changed quite a bit (improved AI, improved mapeditor, much quicker gameplay, etc). Game is based on JavaScript/Canvas and WebSockets. On the browser side the map is pre-rendered (as a background image), just the mobile units/buildings and animations are dynamically rendered. The lobby server is made in node.js, but the game server is C++ for performance reasons (mainly the pathfinding). I found the C++ WebSocket libraries out there to be too difficult to use so I made my own based on the rfc. Overall I…

    2022 · battle-of-flags.com · its alternatives →

  13. 13IM

    itch.io is a simple way to find, download and distribute indie games online. Whether you're a developer looking to upload your game or just someone looking for something new to play itch.io has you covered.

    2013 · itch.io · its alternatives →

  14. 14

    Earlier this year, we released our open-source game engine [0] built with Rust, WebAssembly, and WebGPU. Today, we’re happy to announce the Ambient platform, which brings web deployment, server hosting, and more to the runtime. With Ambient, you can make a game, deploy it to the browser in one command, share your URL and instantly play with others, no downloads or installs needed. Our WASM use is innovative; it is being used as both a sandboxed runtime for user code, and as a way to run the entire Ambient runtime in the browser. This, paired with our ECS data model, enables a highly modular…

    2023 · ambient.run · its alternatives →

  15. 15MP

    I have been working on this game somewhat sparsely for the past three years or so. However, it is still in a very early stage, and there is a lot of work to do. One of my friends encouraged me to post about it here, since he felt people might find interesting how I don’t use any libraries for it. The game can be played on a browser by virtue of WebAssembly. There are native ports using either MiniFB or SDL2, but you have to build those yourself. I decided to write the game in C because I feel like it is a simple language that a lot of people can understand well enough, and I didn’t think I…

    2023 · zamfofex.neocities.org · its alternatives →

  16. 16
    Exists▲132

    Generate your own 3D worlds and team-deathmatch in minutes

    2025 · exists.ai · its alternatives →

  17. 17SO
  18. 18

    Review of the open source cloud gaming platform, cloudretrio.io written in golang and using WebRTC for low latency, interactive game play

    2020 · webrtchacks.com · its alternatives →

  19. 19

    Travel across 9realms to solve the mystery behind the porta

    2015 · apps.apple.com · its alternatives →

  20. 20

    A game engine where you can make games without coding.

    2020 · cloudnovel.net · its alternatives →

  21. 21

    Roam the lands in gigantic battlegroups, level up with your party, trade rare items and upgrade your gear!

    2019 · hordes.io · its alternatives →

  22. 22

    Hey folks — here’s a small experiment I hacked together over the weekend: https://cleoselene.com/ In short, it’s a way to build multiplayer games with no client-side game logic. Everything is rendered on the server, and the game itself is written as simple Lua scripts. I built this to explore a few gamedev ideas I’ve been thinking about while working on Abstra: - Writing multiplayer games as if they were single-player (no client/server complexity) - Streaming game primitives instead of pixels, which should be much lighter - Server-side rendering makes cheating basically…

    Jan 2026 · cleoselene.com · its alternatives →

  23. 23

    An engine for easily creating virtual worlds. Contribute to Net5F/AmalgamEngine development by creating an account on GitHub.

    2022 · github.com · its alternatives →

  24. 24RA

    This is a project that I have been working on in my spare time for a while now. It's a new virtual tabletop for playing pen and paper role playing games online, but it takes an entirely different approach than anything out there right now. Rather than trying to turn pen and paper games into video games, with features centered around one-click damage calculations and detailed stats tracking, Roll20 focuses on storytelling. It has completely new features like background music, player journals, and an expansive art library with a built-in web search. The entire system runs on NodeJS, Padrino,…

    2012 · kickstarter.com · its alternatives →

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