If you've been getting absolutely mauled every time you drop into the water in Subnautica 2, the third hotfix from Unknown Worlds has some good news for you. Creature behavior has been tuned across the board, DLSS is no longer crashing the game, and the overall experience is noticeably smoother. The bad news? You still can't kill anything. The fish remain immortal. The fish win again.
Hammerheads leave Tadpoles alone now
What actually changed with the creatures
The headline adjustment in this patch targets three specific fauna types, each getting a distinct set of behavioral tweaks that shift how threatening they feel in practice.
Hammerheads were probably the most complained-about offender before this fix. They would relentlessly pursue players, even following them all the way back to base, and they'd attack unpiloted Tadpoles sitting completely still in the water. That last part is now fixed. Hammerheads will still take an interest in your parked Tadpole, but they won't attack it while no one's inside.
Marrowbreaches got a trade-off adjustment. Their individual hits now deal more damage, but the frequency of those attacks has been reduced. The net result is a creature that feels more deliberate and less like a relentless damage-per-second machine grinding down your hull.
Nibblers received the most detailed rework of the three. Their perception range has been reduced, so they spot you from a shorter distance. Once they do notice you, they now spend more time circling before committing to an attack, and their movement speed has been lowered. Like the Marrowbreach, they also hit harder per attack, which keeps them from feeling completely defanged.
Here's the thing: these changes don't make the full roster of Subnautica 2 creatures harmless. The intent seems to be giving players more readable, predictable threat patterns rather than just reducing danger across the board. A Nibbler that circles you before striking is scarier in some ways than one that just rushes in immediately, because now you have a window of dread to sit with.
DLSS fixes and other technical cleanup
Beyond the fauna changes, this patch does a lot of quiet but meaningful technical work. DLSS was causing crashes for a portion of players, and that issue has been resolved. Settings for DLSS were also failing to save between sessions, which is now fixed. Frame Generation has been enabled across all versions of the game, not just specific configurations, and DLSS itself has been updated to version 4.5.
Several other crash-causing bugs have also been removed, though the patch notes don't go into specific detail on each one. The overall effect is a more stable build than what launched into Early Access.
The bigger picture on creature design
This is the third hotfix in a short window since Subnautica 2 entered Steam Early Access, and all three have touched creature behavior in some form. The previous patch stopped Hammerheads from following players all the way back to their bases. The one before that addressed the initial wave of EULA concerns and promised further balance work.
The pattern is clear: Unknown Worlds is iterating fast on the one area of the game generating the most community friction. The debate over whether players should be able to kill creatures has been loud since launch, with multiple developers weighing in to explain that vulnerability is intentional and combat isn't coming. What the studio is doing instead is making sure that vulnerability feels fair rather than arbitrary.
For players who want to go deeper into what's new and what's confirmed for the full roadmap, the complete Subnautica 2 early access features breakdown covers everything from the new planet Zazura to 4-player co-op and the Tadpole vehicle. More creature adjustments are almost certainly coming as the Early Access period continues.
