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Slow Rockets

by topasmusic

Slow Rockets cuts the speed that fireworks add to Elytra flight by about 80 percent, leaving normal gliding untouched.

FabricClient and serverMIT LicenseOpen source1.21.11 – 26.3

What it does

Players who fly with Elytra use firework rockets to gain a burst of speed. Slow Rockets reduces only that firework boost, so the rockets still launch the player but accelerate far less. Ordinary Elytra gliding keeps its vanilla speed, and the change applies only to the acceleration that fireworks provide.

The mod suits servers and worlds that want to keep Elytra travel while removing the fast rocket travel that the vanilla game allows. When a boost is used, the mod can also display a brief action-bar notice, with a cooldown applied between notices, as added feedback; server owners can make the mod mandatory so players without it are kept off the server.

Slow Rockets is open source under the MIT License and needs Fabric API. It is published for Fabric only, across five release versions, 1.21.11 – 26.3, with 1.0.4 for 26.3 as the latest file. Both the server and every player need it.

Key features

  1. Firework boost reduction

    Firework acceleration on Elytra flight is slowed by about 80 percent, while the rockets remain usable.

  2. Normal gliding unchanged

    Elytra gliding speed without fireworks stays at the vanilla value, so only rocket boosts are affected.

  3. Action-bar messages

    Each time a boosted flight begins, a brief action-bar notice appears, and a cooldown limits how often it shows, letting players know the boost fired.

  4. Optional server enforcement

    Server owners can block clients that lack the mod, so every player on the server applies the same boost reduction.

Compatibility

Latest build for each game version and loader.

26.31.0.4
26.21.0.3
26.1.21.0.2
26.1.11.0.2
1.21.111.0
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

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required

Use cases

Balanced Elytra travel

Servers that want Elytra travel without the fastest rocket flights can apply the reduction and keep rockets in use.

Who it’s for: Server owners who want to keep firework rockets on Elytra while slowing their boost, and players who join those servers.

How it compares

Full comparison

Infinity Fireworks is a server-side only mod under the MIT License, published for 1.21.11 – 26.3, so players can join without installing anything. Big Jims Elytra Nerf is also server-side only but licensed under the GNU General Public License v3.0 only and targets 26.2 alone. Slow Rockets differs by requiring the mod on both the client and the server, which lets it enforce the change.

ModLoadersGame versionsEnvironmentUpdated
Slow RocketsFabric1.21.11 – 26.3Client and server2026-10-03
Infinity FireworksFabric1.21.11 – 26.3Server-side only2026-09-21
Big Jims Elytra NerfFabric26.2Server-side only2026-08-30

Questions

Does Slow Rockets need Fabric API?

Yes. Fabric API is required, and the mod is published for Fabric only.

Must the server and clients both install Slow Rockets?

Every player and the server need a copy of the mod. Clients can run it locally to apply the nerf, and the server can require it so that clients without it cannot join.

Does the mod change normal Elytra gliding?

No. Only the speed added by firework rockets is reduced, and normal gliding keeps its vanilla speed.

More from topasmusic

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What the author says

A lightweight Fabric mod that specifically nerfs Elytra firework boost speed without changing normal Elytra gliding. Perfect for servers or worlds that want to balance Elytra travel without removing rockets entirely. Slow Rockets reduces only the firework boost applied to Elytra flight.
topasmusic, on the Modrinth page

Official listing

Owner
topasmusic
Published
2026-05-17
Updated on Modrinth
2026-10-03
Facts verified
2026-10-15