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
Install UE4SS into your Subnautica 2 game folder
Copy the FastFly folder into Binaries/Win64/ue4ss/Mods/
Launch the game and press F4 in-game
Made with love for the Subnautica 2 community. Found a bug? Leave a comment below.
The Colossus Leviathan is an ancient abyssal titan found deep below the crater edge.
The Colossus Leviathan is an ancient abyssal titan found deep below the crater edge.
