Cool Functions
by mattmunich
Cool Functions is a data pack for Minecraft that adds a custom Ender Bow, five tiers of Jet Packs, a morph system and Ghost Blocks through the function command.
What it does
The Ender Bow is a custom bow whose arrows teleport the shooter to where they land; players hold right-click as with a normal bow and the arrow is followed until it lands. The recipe becomes available automatically once the required materials are obtained, and the bow needs four Ender Pearls to craft. Five tiers of Jet Pack each have their own custom color and raise fuel capacity, speed and maximum altitude, with the top tier meant for creative use.
The data pack also includes an experimental morph system that replaces the player with a chosen mob, and Ghost Blocks that look like normal blocks but can be passed through. Ghost Blocks can be removed one at a time, in a 10×10×10 area, or across all loaded chunks in the world. The utility functions include ClearLag, which removes dropped item entities, and are restricted to administrators. The pack is server required and works with the Fabric, Forge, NeoForge and Quilt loaders across 1.19.4 – 26.3, with snapshot builds published; the server must run it, while a client may leave it out. It is open source under the MIT License and is maintained by mattmunich.
Key features
Ender Bow
A custom bow whose arrows teleport the shooter to the landing point, with a recipe that appears once the materials are gathered.
Five Jet Pack tiers
Each tier has its own color and raises fuel capacity, speed and maximum altitude over the one before.
Ghost Blocks
Blocks that look normal but can be passed through, removed singly, in a 10×10×10 area or across loaded chunks.
Morph system
An experimental function that transforms the player into a chosen mob, with a spawn egg for Ghost Blocks.
Utility functions
Administrator-only commands such as ClearLag, which removes dropped items from the world.
Gallery
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x6 of 6 versions with builds
This mod also publishes snapshot builds. Snapshots are not shown in the matrix.
How it compares
Jetpack craft is a custom license, server required and client optional, for 1.19 – 1.21.3. Jet-Pack is a NeoForge-only mod for 1.21.1 – 1.21.4 that needs the client and server. Bow Infinity Fix is open source under the GNU Lesser General Public License v3.0 only and also server required, for 1.20 – 26.3.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Cool Functions | Fabric, Forge, NeoForge and Quilt | 1.19.4 – 26.3 | Server required, client optional | 2026-09-16 |
| Jetpack craft | Fabric, Forge, NeoForge and Quilt | 1.19 – 1.21.3 | Server required, client optional | 2026-02-11 |
| Jet-Pack | NeoForge | 1.21.1 – 1.21.4 | Client and server | 2025-07-06 |
| Bow Infinity Fix | Fabric, Forge and NeoForge | 1.20 – 26.3 | Server required, client optional | 2026-10-13 |
Questions
Does the server need Cool Functions?
Which loaders can run Cool Functions?
Are Ghost Blocks available in every world?
In the catalog
Cool Functions is one of 3,932 Transportation mods on ModsFinder, and one of 2,390 Transportation mods for Fabric. 8,071 mods support Minecraft 26.3.
Similar mods
What the author says
The Ender Bow recipe will also automatically unlock when you obtain the required materials. The Jet Pack comes in five tiers, each providing increased fuel capacity, speed, and maximum altitude.
Official listing
- Modrinth page
- modrinth.com/mod/coolfunctions
- Owner
- mattmunich
- Published
- 2023-10-21
- Updated on Modrinth
- 2026-09-16
- Facts verified
- 2026-10-15
