How long is Subnautica: Below Zero?

Subnautica: Below Zero takes about 20h 10m to beat the main story, or around 26h 16m with extras.

How long does it take to 100% Subnautica: Below Zero?

A completionist run of Subnautica: Below Zero takes about 32h 29m.

80Meta Score

11k

Subnautica: Below Zero

Indie Adventure

Developer: Unknown Worlds Entertainment|
Publisher: Unknown Worlds Entertainment

Base Game: Subnautica

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Steam Reviews

Very Positive90% of 93,262 reviews are positive

Playtime

Updated community averages based on player submissions.

Main Story

20h 10m

Main + Extra

26h 16m

Completionist

32h 29m

Links

Steam Epic Games Nintendo PlayStation Xbox Official

About This Game

Dive into a freezing underwater adventure on an alien planet. Below Zero is set two years after the original Subnautica. Return to Planet 4546B to uncover the truth behind a deadly cover-up. Survive by building habitats, crafting tools, & diving deeper into the world of Subnautica.

Media

2 videos + 6 screenshots

Last updated Mar 7, 2026