PET Bottle Rocket
by Aikoyori
PET Bottle Rocket lets players build a water-powered rocket from plastic bottles, a launch mechanic inspired by STEM learning, for Fabric on 1.20.4.
What it does
Players craft plastic bottles and fill them with water, then put the cap on, since the cap has to go on first. Filled bottles form the rocket, which is thrown or placed down and launched with a Sneak and right-click. Blacksmith chests hold plastic scraps, and dungeon chests can also generate them.
When a launched rocket hits a solid block, it deals knockback and some damage to whatever it strikes. In Survival Mode, the rocket drops 4 Plastic Scrap, and 6 Paper lets the player recover some material from it. The mod warns that shots are not perfectly accurate and may drift a little. It needs Fabric API and runs on client and server, so both the server and every player need the mod. It is released under the MIT License, is open source, and targets 1.20.4 only, with the latest file dated 2024-01-21.
Key features
Water-filled bottle rocket
A rocket is built from plastic bottles filled with water, and the pressure behind the water is what drives the launch.
Plastic bottle crafting
Bottles are made from plastic scraps and can be filled like glass bottles, with the cap placed before filling.
Launch by throwing or placing
The rocket can be thrown or set down, then activated with Sneak and right-click to launch.
Impact and recovery
On hitting a solid block, the rocket deals knockback and damage, and it can be recovered for paper and scraps.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Classroom demonstrations
Teachers and students can use water rockets to illustrate pressure and launch behavior, which fits the STEM learning focus of the mod.
Who it’s for: Players who enjoy small physics-style builds and launch experiments in survival worlds, and server owners who want a simple water rocket mechanic.
How it compares
Rocket Utils is a Fabric mod for 1.20 – 1.21.6 that runs client-side only, under a custom license and not open source. XP Slurper is a Fabric mod for 1.20.1 – 1.20.6 that runs server-side only, under All rights reserved and not open source, so it differs in environment and license from PET Bottle Rocket.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| PET Bottle Rocket | Fabric | 1.20.4 | Client and server | 2024-01-21 |
| Rocket Utils | Fabric | 1.20 – 1.21.6 | Client-side only | 2025-06-18 |
| XP Slurper | Fabric | 1.20.1 – 1.20.6 | Server-side only | 2024-07-07 |
Questions
Does PET Bottle Rocket require Fabric API?
Does PET Bottle Rocket need to be installed on the server?
Which Minecraft version does PET Bottle Rocket support?
In the catalog
PET Bottle Rocket is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 13,907 mods support Minecraft 1.20.4.
More from Aikoyori
Similar mods
What the author says
This mod allows you to make a Water-powered Rocket! No pressure needed. Plastic bottles are called ペットボトル (PET bottle) in Japanese.
Official listing
- Modrinth page
- modrinth.com/mod/pet-bottle-rocket
- Owner
- Aikoyori
- Published
- 2023-12-28
- Updated on Modrinth
- 2024-01-21
- Facts verified
- 2026-10-15