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11 The Sparse Plains is an open, relatively barren biome on Proteus in Subnautica 2. It is the confirmed habitat of the Collector Leviathan, the first hostile leviathan-class organism revealed for the game. The combination of open terrain with limited cover and an aggressive apex predator makes the Sparse Plains one of the most dangerous exploration zones on the planet.
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33 Terrain
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55 The biome's name describes its defining characteristic: open, sparsely populated underwater terrain with relatively little cover. Unlike the dense vegetation of the Kelp Forest or the complex coral structures of the Coral Gardens, the Sparse Plains offer few places to hide. This openness is central to the biome's danger profile: players are visible from long distances, and the Collector Leviathan's line of sight is largely unobstructed.
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77 The Collector Leviathan
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99 The Collector Leviathan spawns in the Sparse Plains approximately 20,000 to 25,000 units from the player's position upon entering the biome. This is the first hostile leviathan players encounter in Subnautica 2. The creature was detailed in Dev Vlog 3 (September 16, 2025).
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1212 The Collector is a massive squid-like predator with four main tentacles capable of grabbing, crushing, and swatting players. Its AI uses Unreal Engine 5 behavior trees and a stimulus system that reacts to light, sound, and player movement in real time. The creature is described as "intelligent but easily irritable" with "a strong dislike for anything it does not recognize."
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1414 In the Sparse Plains specifically, the open terrain means:
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1616 The Collector has clear sightlines to detect the player at rangeThere is limited terrain to use as cover during encountersPlayers must rely on flares and quiet swimming to evade rather than hiding behind obstaclesThe Tadpole submersible provides some protection but is still vulnerable to tentacle grabs
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1818 Survival strategies
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2020 Because Subnautica 2 has no weapons, the Collector Leviathan cannot be killed. Every encounter in the Sparse Plains is about evasion, distraction, or escape. Confirmed strategies include:
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2323 StrategyHow It WorksFlaresThrowing flares away from the player's position draws the Collector's attention toward the light stimulus, creating a window to swim clear. The distraction is temporary.Quiet movementThe Collector reacts to sound. Slow, deliberate swimming generates less noise than sprinting, reducing the chance of detection.DarknessThe stimulus system reacts to light. Swimming in darker areas or turning off the flashlight may reduce the Collector's awareness of the player.DistanceThe Collector spawns 20,000-25,000 units away. Players who avoid the central area of the biome may be able to gather resources from the edges without triggering a close encounter.
2424 Gameplay Significance
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2626 The Sparse Plains likely represent a mid-to-late-game challenge zone. The distance from spawn, the presence of an apex predator, and the open terrain all suggest this biome is not intended for early exploration. Players will likely need upgraded vehicles, genetic adaptations, and tactical tools before venturing into the plains.
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2929 What Remains Unknown
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3131 Specific depth rangeUnique resources available in the biomeWhether creatures other than the Collector Leviathan inhabit the plainsHow the biome connects to adjacent zonesWhether the Blight affects this areaWhether the dynamic weather system changes the Sparse Plains' visibility and danger level