What open source games do you play?

1. wesnoth

   1 131 5,828 9.9 C++

   An open source, turn-based strategy game with a high fantasy theme.

   

   Battle for Wesnoth https://www.wesnoth.org/

2. CodeRabbit

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3. Mindustry

   2 272 23,473 9.9 Java

   The automation tower defense RTS

   

   Mindustry https://mindustrygame.github.io/

4. osu

   3 407 16,211 10.0 C#

   rhythm is just a *click* away!

   

   osu! is a rhythm game that has been in the process of replacing it's server and client with open source versions for a few years now.

5. ddnet

   4 14 657 10.0 C++

   DDraceNetwork, a free cooperative platformer game

   

   Teeworlds and it's DDRace mod (kinda 2D DeFRaG) https://ddnet.tw

6. OpenTTD

   5 254 6,759 9.9 C++

   OpenTTD is an open source simulation game based upon Transport Tycoon Deluxe

   

   Open TTD

7. teiserver

   6 140 71 9.7 Elixir

   Middleware server for online gaming

   

   If you like Zero-K, you may like BAR (Beyond All Reason).

8. 0ad

   7 142 2,733 9.2 C++

   Discontinued [DEPRECATED] Git mirror of the 0 A.D. SVN source code (migrated to https://gitea.wildfiregames.com on August 20th 2024)

   

   0 AD.

9. SaaSHub

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10. flare-game

    8 16 1,150 5.5 CMake

    Fantasy action RPG using the FLARE engine

    

    I'm a big fan of Flare, and it was a sleeper hit for me because I didn't grow up with games like Diablo. It's open-source, and while it has a pretty short campaign in the vanilla version, it has a lot of fan-made campaigns and mods. It's not the most engaging game I've played, but it's fun to zone out to while listening to podcasts.

11. endless-sky

    9 147 6,415 9.8 C++

    Space exploration, trading, and combat game.

    

    Endless Sky

12. crawl

    10 660 2,495 10.0 C++

    Dungeon Crawl: Stone Soup official repository

    

    "Dungeon Crawl, Stone Soup" https://crawl.develz.org/

13. opsu

    11 1 772 0.0 Java

    opsu! ~ an open-source osu! client

    

    https://github.com/itdelatrisu/opsu this one?

14. warzone2100

    12 122 3,331 9.8 C++

    Command the forces of The Project in a battle to rebuild the world after mankind has been nearly destroyed by nuclear missiles. A 100% free and open source real-time strategy game for Windows, macOS, Linux, BSD+

    

    Warzone 2100 is the only open source game I've tried as far as I'm aware of. https://wz2100.net/

15. Barotrauma

    13 86 1,842 7.3 C#

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

    

    I’ve modified it on my side to rebind/add new controls and it worked just fine without the game complaining about me having a modified version. GitHub

16. shapez.io

    14 88 6,560 2.8 JavaScript

    shapez is an open source base building game on Steam inspired by factorio!

    

17. shapez.io

    15 159 3 0.0 JavaScript

    shapez.io is an open source base building game inspired by factorio! Available on web & desktop (by Sense101)

    

18. devilution

    16 15 8,856 4.3 C++

    Diablo devolved - magic behind the 1996 computer game

    

    Devilution is a reversed-engineered recreation of the Blizzard's Diablo engine. Still need the original game, and optionally Hellfire, for maps and assets.

19. SudoMice

    17 1 2 3.9

    Command line GUI exact two players game inspired of sudo command's power..

    I developed and published my game Sudo Mice but its source code is not open even for me, because I lost source codes... So I published it under nolicence license.

20. vcmi

    18 67 4,837 10.0 C++

    Open-source engine for Heroes of Might and Magic III

    

    There are also a lot of Open Source re-implementations of closed source games: fheroes2 ( https://vcmi.eu/ ) vcmi (https://vcmi.eu/ )

21. gemrb

    19 36 1,032 9.9 C++

    GemRB is a portable open-source implementation of Bioware’s Infinity Engine.

    

    gemRB ( https://gemrb.org/ )

22. SaaSHub

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