For example Project Cartographer describes itself as the following

Project Cartographer is a modification for Halo 2 PC (Halo 2 for Windows Vista) that restores online play (Microsoft abandoned the LIVE servers) and adds additional features that are not present in the base game.

Before the release of Master Chief Collection it was my go-to for playing online.

Similarly H1-Mod exists for CoD: Modern Warfare Remastered.

I’d be interested to hear which ones you’ve tried and how active the community is. They don’t need to be currently active or a replacement for a game’s existing multiplayer services. It could be something like Zandronum which allows you to play the classic Doom or NVMP-X which allows you to play Fallout New Vegas with friends.

Most of these services don’t contain DRM so you can use Steam, GOG, Humble Bundle, or any other version of the game and because they are community run you don’t have to worry about servers going down as time goes on and can potentially host your own games.

I also like to make a special mention of X Link Kai which allows you to play system link games remotely. If you are curious I’d check out ConsoleMods.org for setup instructions and their website for a list of supported games.

There’s plenty of other similar services out there depending on what console you are using such as Insignia for the original Xbox.

I’d love to see these communities grow.

    • Corroded@lemmy.dbzer0.comOPEnglish
      3·
      2 years ago

      Are they inactive right now? I’m not sure if they went the way of re3 (a reverse engineered version of GTA 3 designed to fix bugs, port the game to several platforms, and expand modding capabilities) and were shut down under pressure from Rockstar.

      • 𝒍𝒆𝒎𝒂𝒏𝒏@lemmy.oneEnglish
        2·
        2 years ago

        I think so - last update was released in 2015

        I was looking forward to trying re3 but rockstar’s lawyers decided to be a killjoy. There was another mod that joins the GTA3, VC and SA maps together and uses a modified version of SAMP for multiplayer (gta underground IIRC), I believe they got spooked by Rockstar too and pulled the plug

        • Corroded@lemmy.dbzer0.comOPEnglish
          3·
          2 years ago

          There are archived versions of re3 and reVC if you wanted to give it a try. I can’t say I’ve had any issues running the latest release.

  • Nikki@lemmy.worldEnglish
    2·
    2 years ago

    not quite a multiplayer mod in the traditional sense, but I play mario kart wii theough wiimmfi a lot, and hit 9999vr recently! never would have been able to achieve that without the community effort to keep our game alive

  • Stormcrow@lemmy.dbzer0.comEnglish
    2·
    1 year ago

    There’s Nitrox for Subnautica, but development seems to have stopped for now with no ETA on continuing. There are bugs and it’s recommended to avoid certain building structures and riding in the Cyclops together. Still, it can be really fun

  • Keaton@lemmy.worldEnglish
    2·
    2 years ago

    I have recently been playing Resident Evil Outbreak again, an cooperative online PS2 horror game. It’s community has build a custom server called Outbreak Resurrection. At first, it was very cumbersome to set up, but it was definitely worth it. It is very niche, but I still was able to spot around 2-4 players everytime I booted it up.

    It is honestly heartwarming, seeing people go the extra mile and try to revive an old experience. Sometimes also trying to enhance the experiences by fixing and updating the game. Everything without asking for a penny.

    These community should be supported and shared to let them know that we appreciate them 👍

  • mac@artemis.camp
    1·
    2 years ago

    I have used a certain “online-fix me” (not sure if I’m allowed to promote) website that offers patches for games so you can connect to the official multiplayer servers.

    Of course there’s a possibility of getting banned if they detect it, but I’ve played a lot of the Forza games online with this throughout the years without issue.

    I realise it’s not strictly on topic for community run servers, but it may be of interest to people in this thread.

    • Corroded@lemmy.dbzer0.comOPEnglish
      1·
      2 years ago

      Another classic. It’s a shame the client cannot run on Linux due to the lack of shared resources in DXVK.

      From what I recall Doitsujin of DXVK seems to think it’s a ways away from getting fixed.