Two Player Required
A co-op-only datapack: play alone and you're stuck in Adventure mode with blindness and a "waiting for other players" message until a second player joins…
⬇ Download on Modrinth
Two Player Required
A small datapack that turns your world into a co-op-only experience. You simply can't play on your own anymore.
How it works
If you're the only one online, the world basically puts itself on hold. You'll get hit with permanent blindness, you're dropped into Adventure mode so you can't break or place anything, and a red "WAITING FOR OTHER PLAYERS" message sits on your screen.
The moment a second player logs in, it all sorts itself out on its own. The blindness clears, you're put back into Survival, and the message disappears. From there you just play normally.
The whole point is that nobody gets to start until everyone's actually there.
SURVIVAL ONLY
Just so it's clear: THIS ONLY WORKS IN SURVIVAL. It's not built for Creative or Adventure worlds, so don't expect it to behave there.
Made for Minecraft Java 1.21+.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21, 1.21.1, 24w33a
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.
- Downloads as pack.zip
- Download size: 4 KB
- Download link checked 24 Aug 2026 — working
These come from our own check of the pack file, not from the source page.