No Singleplayer

This mod adds a simple but useful feature to Minecraft: it disables the Singleplayer option on the client side.

351 Downloads

neoforgemanagementutility

Rent Server with this Mod

Screenshots

About this Mod

为游戏添加了一个功能：禁用客户端的单人游戏模式
这个模组为我自己制作，或许有其他人也需要它。
你可以使用它在任何整合包中，无需告知作者。

语言支持：中文、繁体中文、俄语、日语、英语

This mod adds a simple but useful feature to Minecraft: it disables the Singleplayer option on the client side.
Originally created for my own use, I hope it might also be helpful to others.
You’re free to include this mod in any modpack without needing to notify or credit the author.

Supported languages: Chinese (Simplified), Chinese (Traditional), Russian, Japanese, and English.

Available Versions

No Singleplayer 0.0.2Alphaalpha

MC 1.21.1neoforge

April 24, 2026

How to Install No Singleplayer on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set neoforge Loader

In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.1).

Install Mod

Open the mod browser in the dashboard and search for "No Singleplayer". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

neoforge

Minecraft Versions

1.21.1

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

No Singleplayer server crashes on startup – what to do?

Most common cause: wrong neoforge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.

Is No Singleplayer compatible with neoforge?

No Singleplayer officially supports neoforge for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with No Singleplayer – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if No Singleplayer consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.