Top 23 multiplayer-game Open-Source Projects

• OpenJK

  16 1,948 8.2 C++

  Community effort to maintain and improve Jedi Academy (SP & MP) + Jedi Outcast (SP only) released by Raven Software

  

Project mention: Microsoft could cram more ads into Windows 11 – this time in the Settings app | Recent moves with the Start menu are now being echoed within the Settings panel in testing | /r/technology | 2023-05-08

• Barotrauma

  85 1,609 8.4 C#

  A 2D online multiplayer game taking place in a submarine travelling through the icy depths of Jupiter's moon Europa.

  

Project mention: How to stop my medic from taking all the opiates | /r/Barotrauma | 2023-12-09

This is a bug Make sure medic have bandages in his inventory, then he will use them rather than opiates

• InfluxDB

  www.influxdata.com featured

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• game

  1 1,211 2.1 JavaScript

  ⚔️ An online JavaScript 2D Medieval RPG. (by delaford)

  

• openspades

  6 1,104 2.9 C++

  Compatible client of Ace of Spades 0.75

Project mention: Open source Diablo 1 engine – DevilutionX 1.5.0 released | news.ycombinator.com | 2023-06-17

Ace of Spades is one. I usually play with the OpenSpades client[1], but there is also Betterspades[2], and probably many other clients I don't know of yet. There are usually about 10-50 players online on the public servers listed on BuildAndShoot[3], variable depending on the time of day and mostly from Latin America it seems.

One can host the game with piqueserver[4]. I'm not sure if one can still host with the original Ace of Spades server, but the game was 'shut down' in 2019 so maybe not.

[1]: https://openspades.yvt.jp/

[2]: https://github.com/xtreme8000/BetterSpades

[3]: https://www.buildandshoot.com/servers/

[4]: https://www.piqueserver.org/

• Hypersomnia

  5 909 9.8 C++

  Multiplayer top-down shooter made from scratch in C++. Comes with an in-game Editor!

  

Project mention: My competitive top-down shooter brings open-source to eSports. Written from scratch, in bare C++ - runs natively on Linux. AppImage is just 30 MB. Coming to Steam on 28th. | /r/linux_gaming | 2023-12-11

Cool part? Part of the game's source code was used in Assassin's Creed: Valhalla, as well as Skydio drones. See our GitHub for details: https://github.com/TeamHypersomnia/Hypersomnia

• etlegacy

  67 523 9.8 C

  ET: Legacy is an open source project based on the code of Wolfenstein: Enemy Territory which was released in 2010 under the terms of the GPLv3 license.

  

Project mention: I need a game like OW. | /r/Overwatch | 2023-06-08

You could try Dirty Bomb or the classic Wolfenstein: Enemy Territory for some class-based objective shooters. Both are free to play.

• netplayjs

  5 451 4.3 TypeScript

  Make P2P multiplayer browser games, no server hosting or synchronization code required. Powered by rollback netcode + WebRTC.

Project mention: Q: How are online games like Street Fighter 6 able to synchronize inputs from two players at a high frame rate? (60fps) | /r/gamedev | 2023-05-22

Since you come from a web background check this JS rollback library: https://github.com/rameshvarun/netplayjs

• SaaSHub

  www.saashub.com featured

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

  

• reldens

  3 414 9.5 JavaScript

  Reldens - You can make it - Open Source MMORPG Platform

• open.mp

  3 403 8.9 C++

  Open Multiplayer, a multiplayer mod fully backwards compatible with SA-MP

  

Project mention: Is open.mp dead? | /r/samp | 2023-10-16

P.S. Im not trying some incredible debate here. Its just that I payed 60$ a month on hosted tabs since 2014, and Im trying to do the same type of advertisement but where should I advertise my server if open.mp is dead?

• aws-gamelift-sample

  1 233 0.0 C++

  A simple full-stack game sample using GameLift and AWS services.

  

• Commander_Wars

  28 200 9.7 C++

  The aim of this project is to create an Advance Wars Clone with a lot of additions customizations and modding support. For Contact Inforamtion see the wiki page. Take a view on the game.

Project mention: Xanari Crew Campaign Playthrough Part 1 - Custom Campaign for Commander Wars (AW Fangame) | /r/Advance_Wars | 2023-06-01

Commander Wars: https://github.com/Robosturm/Commander_Wars

• gym-multigrid

  1 180 0.0 Python

  Lightweight multi-agent gridworld Gym environment

• retrowars

  5 181 8.5 Kotlin

  Play retro games against each other in any combination in this open source Android multiplayer game.

  

• f1-telemetry-client

  1 158 3.0 TypeScript

  Node UDP client for Formula 1 game telemetry parsing.

  

• Counter-Strike

  13 101 7.9 PHP

  Multiplayer FPS game - Counter-Strike: Football 🏉 (by solcloud)

• farmhand

  51 94 8.1 JavaScript

  A resource management game that puts a farm in your hand

Project mention: Big updates for Farmhand! | /r/incremental_games | 2023-11-03

We hope you'll enjoy these new improvements to the game. We certainly enjoyed making them. Let us know what you think! And if you'd like to look at the game's source code, you can find it here: https://github.com/jeremyckahn/farmhand

• 13

  2 84 7.5 TypeScript

  Fast-action P2P multiplayer game 13 (js13k-2022)

• SMN2

  1 68 4.9 C++

  Character Movement Network Prediction easily accessible in UE5 Blueprints!

• bombermon

  1 68 0.0 JavaScript

  A multiplayer game (Bomberman-like) using Serverless concepts

• uai_shot

  0 59 0.0 Elixir

  A multiplayer ship game built with Elixir, Phoenix Framework and Phaser. :rocket:

• text

  1 53 0.0 PHP

  An experiment with WebSockets and the human condition. (by g105b)

• GeneralsGamePatch

  2 52 9.2 HTML

  Community Patch to fix and improve original Generals Zero Hour 1.04

  

• LunarGdx

  2 45 4.0 Java

  A networking library for LibGDX utilizing Netty allowing easy creation of multiplayer games.

• SaaSHub

  www.saashub.com featured

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

  

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• Big updates for Farmhand!

  1 project | /r/incremental_games | 3 Nov 2023

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• A note from our sponsor - InfluxDB
  www.influxdata.com | 5 May 2024

  Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality. Learn more →

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