Subnautica 2 ships 15 playable biomods in its May 14, 2026 Early Access build, replacing the fragment-and-blueprint upgrade chain of the original Subnautica with a player-character ability system. Biomods are bio-engineered abilities you equip directly on the Pioneer, unlocked by completing bio scans on the matching creatures.
There are two slot types. Active biomods fill 5 hotbar slots and fire on input. Dash is the hero example: hold a direction, hit the bind, and you burst out of a predator's lunge cone with a short cooldown. Passive biomods fill 10 always-on slots in a separate panel: Sea Skimmer for faster swim, Oxygen Control for longer breath holds, Bioluminescence for low-light vision. The two panels never compete for slots.
Unknown Worlds has 8 more biomods drafted for upcoming Early Access patches, plus 54legacy / cut entries kept for reference. Toggle the "Drafted" or "Cut / legacy" chips above the grid to inspect either set.