FastFly CurseForge mod page description and requirements

FastFly

Subnautica 2 · Quality of Life

Tired of slowly swimming across the map? FastFly lets you instantly toggle a high-speed fly mode with a single key press. Zoom through the ocean, soar above the surface, or cut straight to your base — no vehicle required.

Features

One-key toggle

Press F4 to turn fly mode on or off instantly

Works everywhere

In water, above the surface, in caves

Blazing fast

Default speed gets you across the map in seconds

Sprint boost

Hold Left Shift to go 3× faster

Look-based movement

Flies in the direction your camera faces

Configurable

Edit the Lua file to change speed and keybinds

Controls

Key	Action
`F4`	Toggle fly mode on / off
`W A S D`	Move in the direction you're looking
`Space`	Fly up
`C`	Fly down
`Left Shift`	Sprint boost (3× speed)

Requirements

Subnautica 2

Early Access — any version

UE4SS (Unreal Engine Script System)

Version 3.0.0 or higher — required for Lua mod loading

Windows PC

UE4SS currently supports Windows only

Subnautica 2 is Early Access. Game updates may break mods temporarily. If fly mode stops working after a patch, check the mod page for an update or report it in the comments.

Installation

1

Install UE4SS into your Subnautica 2 game folder

2

Copy the FastFly folder into Binaries/Win64/ue4ss/Mods/

3

Launch the game and press F4 in-game

Made with love for the Subnautica 2 community. Found a bug? Leave a comment below.