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I will develop custom unity multiplayer game mods for android, ios, and windows
Jack
About this gig
Looking for a multiplayer mod that works seamlessly across Android, iOS, and Windows? I develop custom Unity multiplayer mods built for true cross-platform compatibility so your players can connect and play together no matter what device they're on.
Using Unity's networking stack (Netcode/Mirror/Photon depending on your project) alongside BepInEx, MelonLoader, or Harmony patching where needed, I can add multiplayer functionality to an existing mod, fix cross-platform sync issues, or build new multiplayer features from scratch matchmaking, session hosting, player sync, in-game chat, and more.
Whether you're modding an existing multiplayer title or adding multiplayer support to a single-player Unity game, I'll make sure it runs smoothly across mobile and desktop alike.
My service are:
- Cross-platform sync (Android / iOS / Windows)
- Multiplayer networking setup (host/client, matchmaking)
- IL2CPP & Mono support
- Bug fixes for existing multiplayer mods
- Clean, documented, and tested code before delivery
Send me your game/mod details and target platforms, and I'll confirm feasibility before you order.
Get to know Jack
Jack
Unity mod dev
- FromArgentina
- Member sinceAug 2026
- Avg. response time5 hours
Languages
English, Spanish, German, Portuguese
I build mods for Unity-based games — from small quality-of-life tweaks to full gameplay overhauls. My work spans C# scripting, IL2CPP/Mono reverse engineering, asset extraction and reimport, custom UI systems, and save-file manipulation. I'm comfortable digging through decompiled assemblies with dnSpy or ILSpy, hooking into game logic with Harmony, and packaging mods for distribution through BepInEx, MelonLoader, or Thunderstore.
FAQ
Do I need to provide the game's source code or Unity project files?
Not always for existing games, I can often work directly with the compiled build using decompilation and patching tools (Harmony, BepInEx, MelonLoader). If you own the Unity project source, that speeds things up and can unlock more features.
Will the mod work on all three platforms Android, iOS, and Windows?
Yes, sure it will work across all three. Platform support also depends on the target game's engine setup, so I'll confirm feasibility with you first
What networking solution do you use for multiplayer
It depends on your project I work with Unity Netcode for GameObjects, Mirror, or Photon, whichever best fits your game's existing architecture or your performance/budget needs. If you're unsure, I can recommend one after reviewing your project.
Can you fix an existing multiplayer mod instead of building one from scratch?
Yes
Is the source code included, and can I modify it later?
Yes, I will include the source code so you have full ownership and can extend it yourself or hand it to another developer later
