Some videos on platforms like TikTok showcase "multiplayer gameplay," but these are typically or skin swaps that give the illusion of multiple players through clever editing.

: Recording player inputs (e.g., move, jump, shoot) into JSON files to replay them on a server for automated testing without needing multiple human players. Cosmoteer.net 2. Community Projects If you are looking for mods for existing games: Multiplayer "Domination" Mode Prototype #2

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That depends on whether a new generation of reverse engineers picks up the torch.

For years, this phrase has been whispered in Discord servers, requested on Reddit threads, and abandoned in SourceForge repositories. It represents the ultimate "what if" of the action-adventure genre. But why is it so elusive? What progress has been made? And if it ever becomes a reality, what would the "Blacklight Battle Royale" or "Viral Co-op" actually look like?

Would you like a checklist for converting this prototype into a release-ready mod, or specific code examples for desync fixes?

released a playable prototype of a co-op mode inspired by similar mechanics, where a commander controls base development while other players use "Combat Avatars". Garry's Mod "Prototype" Workshop Mod