ModsFinder

Create:Backtank Expansion

by dean7948

Create: Backtank Expansion lets players carry several backtanks at once, with a jetpack drawing air from a shared pool, and it adds an air-time display on the J key.

NeoForgeClient and serverAll rights reserved1.21.1

What it does

The addon extends Create's backtanks and, optionally, its jetpacks, combining them into one air-management system. A player can carry multiple backtanks in the inventory, and an equipped jetpack or backtank draws from the shared pool those tanks form. The result is a much longer stay underwater or in flight than a single tank allows.

Equipped backtanks and jetpacks refill themselves from spare backtanks in the player's inventory, so air does not have to be managed by hand. Pressing J shows the remaining time, formatted like the air indicators already shown on backtanks and jetpacks. The mod requires Create, and it runs on client and server, so the server and every player need it. Files are published for NeoForge, for 1.21.1 only, and the code is licensed as All rights reserved, so the mod is not open source.

Key features

  1. Shared air pool

    Multiple backtanks in the inventory combine into one supply that an equipped jetpack or backtank draws from.

  2. Automatic refill

    Equipped tanks refill from spare backtanks in the inventory, so players do not need to swap tanks manually.

  3. Remaining-time display

    Pressing J shows the time left, formatted like the existing air indicators on backtanks and jetpacks.

  4. Longer underwater and flight time

    The combined supply gives considerably more time for diving and jetpack flight than one tank.

Compatibility

Latest build for each game version and loader.

1.21.11.0.0
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

CreateAesthetic Technology that empowers the Player
Required

Use cases

Who it’s for: Players of Create on NeoForge 1.21.1 who want longer air supply for diving and flight, and server owners who run Create on that loader.

Questions

Does Create: Backtank Expansion need Create?

Yes. Create is a required dependency, so it must be installed alongside this mod.

Does the server need the mod as well as players?

Yes. Servers that run it need every player to install it too.

Which game versions does the mod support?

Only 1.21.1 on NeoForge is listed, with version 1.0.0 as the latest file released 2026-08-26.

Does the mod work with Potato Cannon and Extendo Grip?

The author notes say it works with Potato Cannon and Extendo Grip and keeps Create's existing mechanics intact.

In the catalog

Create:Backtank Expansion is one of 36,990 Utility mods on ModsFinder, and one of 13,477 Utility mods for NeoForge. 32,366 mods support Minecraft 1.21.1.

Utility mods36,990NeoForge modsMods for 1.21.132,366

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What the author says

This mod extends the functionality of Create’s backtanks and optionally Create’s jetpacks. It allows players to carry multiple backtanks in their inventory, and the equipped jetpack or backtank will draw from a shared air pool created from all backtanks the player is carrying. This provides significantly longer…
dean7948, on the Modrinth page

Official listing

Owner
dean7948
Published
2026-08-26
Updated on Modrinth
2026-08-26
Facts verified
2026-10-15

Tags

Utility
Open on ModrinthCompare