Life & fun · alternatives · 2026
24 alternatives to Open Sourcing my HTML5 Multiplayer Game Engine
DEFUNCT: HTML5 and Node.js multiplayer browser game from 2013 - tlhunter/Cobalt-Calibur-3
Cobalt Calibur 3 is a multiplayer browser game built with HTML5 and Node.js, originally released in 2012. The project is now defunct and no longer maintained. It was designed as a real-time multiplayer game that ran… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Open Sourcing my HTML5 Multiplayer Game Engine launched in 2012; newer entries below may have overtaken it.
- 1

I open sourced my HTML5 multiplayer 3D voxel browser game engine.
2023 · kevzettler.com · its alternatives →
- 2

Free multiplayer dogfights in your browser, the official reboot of the 2017 hit. Five aircraft, five game modes, no download.
2017 · airma.sh · its alternatives →
- 3IS
2012 · ektomarch.com · its alternatives →
- 4SO
2018 · paiza-battle-ground.paiza-user.cloud · its alternatives →
- 53M
2019 · urk-3d-multi-space-game.herokuapp.com · its alternatives →
- 6IM
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 →
- 7PA
2012 · powderkeg.artillery.com · its alternatives →
- 8MM
Fun free no-download game you
2021 · vnav.io · its alternatives →
- 9IB
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 →
- 10IB
2021 · joust.life · its alternatives →
- 11

Modd.io is a collaborative game editor that runs in browser. It's kind of like Figma for game dev. We made this engine low-code and multiplayer-first, so developeres can quickly prototype casual multiplayer games. I hope some of you guys will find this useful. Would love to hear feedback also. Thank you. Engine Demo: https://www.modd.io
2023 · github.com · its alternatives →
- 129D
2025 · 90s.dev · its alternatives →
- 13

"Game" is a stretch, but I put together this repo containing a pure Rust app which uses SDL2 and compiles to WASM (and can be run in a browser). Older resources were a bit out of date and a bit too verbose for my purposes, so here's a minimal working example.
2024 · github.com · its alternatives →
- 14

The goal is to have a pixel, mod-friendly perfect recreation of Wolfenstein 3D in Rust.
Feb 2026 · github.com · its alternatives →
- 15SM
2017 · juanpabloaj.com · its alternatives →
- 16MJ
2017 · emergencevector.com · its alternatives →
- 17

A simple yet addictive multiplayer game where you can fight monsters and increase levels in 19 different skills. Come and invite your friends too, it is fun! Free to play!
2019 · data.mo.ee · its alternatives →
- 18

Emscripten-Port of Wolfenstein 3D and Spear of Destiny - midzer/wolf4sdl
2023 · github.com · its alternatives →
- 19IM
2024 · boxfight.xyz · its alternatives →
- 20

2019 · mnml.gg · its alternatives →
- 21AO
I made a game (https://polyfight.io/) which revolves around a player (a tank) leveling up and upgrading by killing shapes and other tanks (partially inspired by https://diep.io). It has a bunch of features, a vast number of tanks, an inbuilt chatting system, clans to make teams with your friends, a colour scheme maker, controllable sandboxes which can be public or private, a last man standing gamemode, and an inbuilt 1v1 system with its own ELO rankings and a global leaderboard. The game has a few players right now, and I'd hope to spread the joy players have with…
2024 · polyfight.io · its alternatives →
- 22SM
2016 · hajdarevic.net · its alternatives →
- 23

So, after years of abandoning Rust after the hello world stage, I finally decided to do something substantial. It started with simple line rendering, but I liked how it was progressing so I figured I could make a reasonably complete PSX style renderer and a game with it. My only dependency is SDL2; I treat it as my "platform", so it handles windowing, input and audio. This means my Cargo.toml is as simple as: [dependencies.sdl2] version = "0.35" default-features = false features = ["mixer"] this pulls around 6-7 other dependencies. I am doing actual true color 3D rendering (with Z buffer,…
2025 · totenarctanz.itch.io · its alternatives →
- 24AR
My background project for the last two years has been re-implementing my 2004 C++ shoot'em up game in TypeScript + WebGL, and it's finally done (just in time for the 20th anniversary!) Play the game online: https://nicollet.net/blog/darklaga/darklaga.html Technical article about the remake: https://nicollet.net/blog/darklaga/remake.html I have tested Firefox, Chrome and Edge on desktop and mobile (no access to a device capable of running Safari). It's amazing how much difference 20 years makes: the hardware is so much more powerful, the web…
2024 · nicollet.net · its alternatives →
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