As of the June 2026 'Benthic Horror' update, the Early Access version of FISH has five main Zones, containing a total of 15 distinct levels or sub-areas. This structure takes players from the relatively secure upper decks of the Abyssopelagic Research Installation (ARI) down to the terrifying, unknown depths of the trench it was built to study. Answering "how many levels in FISH game" isn't just a number; it's a descent into madness, with each Zone introducing new horrors, mechanics, and environmental threats.
The current build represents the first five acts of the planned seven-act story. Each Zone functions as a major chapter, containing three sub-levels that often culminate in a significant objective, a new piece of gear, or a terrifying boss encounter that gates progress to the next area. This guide breaks down every level currently available, plus what the developers at Abyssal Interactive have hinted is coming next.
The Complete Level List for FISH (Early Access)
For a quick overview, here is every playable level in the current Early Access version of FISH, organized by the five main Zones. Progress is linear, though some levels feature significant branching paths and hidden secrets that reward thorough exploration.
| Zone # | Zone Name | Sub-Levels |
|---|---|---|
| Zone 1 | The Sunken Labs | 1. Med-Bay & Habitation<br>2. Hydroponics Breach<br>3. The Primary Bioreactor |
| Zone 2 | The Maintenance Tunnels | 4. Ballast Control<br>5. The Filtration Labyrinth<br>6. Sub-level Transit Hub |
| Zone 3 | The Geothermal Spire | 7. The Ventgarden<br>8. Ore Processing<br>9. The Spire's Apex |
| Zone 4 | The Abyssal Plain Observatory | 10. The Viewing Dome<br>11. Specimen Containment<br>12. The Signal Relay |
| Zone 5 | The Maw of the Trench | 13. The 'Benthic Horror' Anomaly<br>14. The Cyclopean Structure<br>15. The Threshold |
A Deeper Dive Into Each Zone
Simply listing the levels doesn't capture the experience. Each Zone is a handcrafted nightmare with a unique identity, set of challenges, and role in the unfolding narrative of the ARI's catastrophic failure.
Zone 1: The Sunken Labs (Levels 1-3)
This is your introduction to the world of FISH. The Sunken Labs are the most 'normal' part of the station, but they're already flooded, dark, and crawling with the first signs of the infestation. The primary goal here is to restore auxiliary power and find basic survival gear.
- Level 1: Med-Bay & Habitation: You awaken here. The level serves as a tutorial, teaching you the core mechanics of swimming, oxygen management, and interacting with station terminals. You'll craft your first makeshift tool, the 'Shank,' and encounter the small but aggressive Glimmer Piranhas.
- Level 2: Hydroponics Breach: A massive hull breach has flooded the station's food supply. This level introduces environmental hazards, forcing you to navigate through tangled, electrified kelp-like growth. It's here you find the schematics for the 'Angler' cutting tool, essential for accessing sealed-off areas.
- Level 3: The Primary Bioreactor: The Zone 1 finale. You must restart the local bioreactor to power the transit system leading to the lower levels. The area is guarded by the station's former security chief, now a grotesque biomass monstrosity known as the Overseer. Defeating him is more a puzzle of environmental interaction than direct combat.
Zone 2: The Maintenance Tunnels (Levels 4-6)
Leaving the relative openness of the labs, you descend into the claustrophobic, labyrinthine maintenance corridors that form the station's circulatory system. The focus shifts from open-ended exploration to tense, close-quarters navigation and puzzle-solving.
FISH in-game screenshot
- Level 4: Ballast Control: This level is a massive, multi-story chamber filled with water ballast tanks. You must solve a complex pressure-valve puzzle to drain specific sections, creating a path forward while avoiding the crushing force of the water.
- Level 5: The Filtration Labyrinth: A maze of pipes, vents, and grates. This is where the game introduces the 'Clinger,' a stationary, barnacle-like creature that latches onto you if you get too close, rapidly draining your oxygen. Stealth and careful observation are key.
- Level 6: Sub-level Transit Hub: Your goal is to get one of the deep-sea trams operational. The hub is a dark, sprawling area patrolled by packs of Stalkers, evolved Glimmer Piranhas that are faster and more coordinated. Success here grants access to the Geothermal Spire far below.
Zone 3: The Geothermal Spire (Levels 7-9)
The environment shifts dramatically as you enter the industrial section of the ARI, built around a massive geothermal vent. Extreme heat is now a constant threat, and your suit's thermal resistance becomes a critical resource to manage.
- Level 7: The Ventgarden: A strange and beautiful but deadly area where alien flora thrives on the superheated water from the vents. Touching these plants causes immediate heat damage. You'll need to find and craft the Thermal-Resin Suit Upgrade to proceed.
- Level 8: Ore Processing: A loud, mechanical hellscape. You must navigate conveyor belts, rock crushers, and molten slag flows, all while being hunted by the 'Furnace Shark,' a creature that has adapted to swim through the liquid rock.
- Level 9: The Spire's Apex: The first true boss fight of the game. At the very top of the spire, you confront the Magma-Craw, a colossal, armored crustacean that guards the final elevator down. You must use the environment's cooling rods to shatter its carapace and expose its weak points.
FISH in-game screenshot
Zone 4: The Abyssal Plain Observatory (Levels 10-12)
After the intense heat of the Spire, Zone 4 plunges you into the silent, oppressive dark of the abyssal plain. This is a shift towards psychological horror. The levels are comprised of observation decks and specimen labs with massive windows looking out into an infinite, crushing blackness where colossal shapes sometimes drift by.
- Level 10: The Viewing Dome: A massive, shattered acrylic dome offers a terrifying panorama of the abyss. This level is about atmosphere and storytelling, with audio logs and data pads revealing the horrifying nature of the research conducted here.
- Level 11: Specimen Containment: Widely considered the game's most terrifying level. You navigate through a series of breached containment tanks that once held deep-sea specimens. You are relentlessly hunted by the Shadow Leviathan, an entity that is nearly invisible in the darkness and can only be tracked by its faint bioluminescence and the sound of its clicking sonar.
- Level 12: The Signal Relay: You must align a massive deep-space communication dish to bounce a signal off a satellite, hoping to contact the surface. The process is lengthy and attracts the attention of everything in the surrounding abyss, culminating in a desperate defense sequence against waves of creatures.
Zone 5: The Maw of the Trench (Levels 13-15)
The final and most recently added zone in Early Access, this is where the game veers into cosmic horror. You leave the man-made structures of the ARI behind and descend into the trench itself, discovering something ancient and impossible.
- Level 13: The 'Benthic Horror' Anomaly: The source of the station's entire catastrophe. This is a non-Euclidean space where gravity, light, and sound behave erratically. Sanity effects, visual distortions, and whispered narration dominate this section.
- Level 14: The Cyclopean Structure: You discover a massive, alien city built into the trench wall. The architecture is all wrong, and navigating it requires solving environmental puzzles that defy normal physics.
- Level 15: The Threshold: The final level of the Early Access build. You reach the heart of the alien city and come face-to-face with a dormant, city-sized entity. Activating a nearby console triggers a reaction, and the game cuts to black with a final, earth-shattering sound—a cliffhanger ending that sets up the full release.
FISH in-game screenshot
Are There Secret or Optional Levels?
Yes, FISH rewards its most dedicated explorers. While not required for story progression, there is at least one major hidden level discovered by the community so far:
The Sunken Archives: Accessible via a hidden pressure-plate puzzle in Zone 2's Filtration Labyrinth. This optional level is a flooded data server bank containing crucial lore about the initial discovery of the 'Benthic Horror' anomaly. It is guarded by unique, phantom-like enemies and contains the schematics for the 'Harpoon Gun,' a powerful late-game weapon that makes subsequent encounters much more manageable. Finding it is a significant advantage.
What's Coming After Early Access?
Abyssal Interactive has been clear that the current 15 levels are just the beginning. According to their official development roadmap on Steam, the 1.0 release, tentatively scheduled for early 2027, will complete the story with two additional Zones.
- Zone 6: The Hadal Core (Speculated): Based on in-game text logs found in the Sunken Archives, this Zone will likely take players inside the planet's mantle through the alien structure, into an area of even more extreme pressure and impossible lifeforms.
- Zone 7: The Source (Speculated): The finale. This is where players will confront the awakened entity from the Threshold and decide the fate of the ARI and, perhaps, the world.
The developers have also confirmed the full release will include a New Game+ mode and a level select feature for players who have completed the main story.
Frequently Asked Questions about FISH's Levels
How long does it take to beat all current levels in FISH?
For a first-time player focusing only on the main objectives, a single playthrough of the five Early Access Zones takes approximately 12 to 15 hours. Completionists who seek out all secrets, including the Sunken Archives, can expect to spend 20 hours or more.
Will my progress reset when new levels are added?
No. The developers have stated that existing save files will be compatible with the 1.0 launch. Your progress through Zones 1-5 will carry over, allowing you to jump straight into the new content upon release.
Is there a level select or New Game+ mode?
Not in the current Early Access build. Both features are confirmed to be part of the full 1.0 release. For now, to replay a specific level, you must start a new game or load a previous save.
What is the hardest level in FISH right now?
While the boss fight in 'The Spire's Apex' is a significant challenge, the community consensus points to Level 11: Specimen Containment. The constant tension of being hunted by the nearly invisible Shadow Leviathan in a dark, enclosed space is a major difficulty spike and a masterclass in survival horror design.
The Descent Continues
With 15 substantial levels spread across five uniquely terrifying Zones, the Early Access version of FISH already offers a complete and harrowing experience. It establishes a powerful sense of dread and mystery, building a fantastic foundation for the final two Zones promised for the full release. The journey from the familiar wreckage of the Med-Bay to the impossible alien architecture of the Threshold is one of the most compelling in modern survival horror.