Ion Cube
Ion Cube is an epic precursor resource in Subnautica 2, harvested from Alien Precursor caches and rare deep biome drops. It powers the most advanced Fabricator recipes, including end-game equipment and Cyclops upgrades that gate the final story arc.
Quick Info
How to Get & Where to Find
Ion Cube cannot be mined with a knife or drill. It is found exclusively in Alien Precursor caches (the glowing cube-shaped containers tucked into wrecks and ruins) and as a rare drop from specific deep biome fauna. Bring a Laser Cutter to open sealed caches.
Uses & Recipes
Ion Cube is a non-negotiable requirement for end-game equipment. Each recipe below consumes at least one cube, so plan to cache multiple before attempting any of them.
Tips & Strategies
Bring the Laser Cutter
Many caches are sealed behind Precursor doors that only the Laser Cutter opens. Without it you'll see the cubes but be unable to grab them. Carry spare Batteries.
Pin Cache Locations
Once opened, a Precursor cache can respawn. Pin each location so you can revisit on the next expedition for repeat Ion Cube runs.
Pair With Mercury Ore
Many Ion Cube recipes also need Mercury Ore. Plan both resources together so you don't end up with one cube and no computer components to actually use it.
Save Cubes for Story
Resist the urge to spend the first cube on cosmetic upgrades. Story progression and Cyclops depth modules both depend on cubes you can't easily replace.
Related Resources
Map Locations
Precursor caches are scattered across deep biomes. Pin every cache you find on the interactive map and plan expedition routes that chain several caches in one dive.
View on Interactive Map →Related Guides
Precursor Cache Locations
Every confirmed cache and the depth required to reach it.
Laser Cutter Blueprint
Materials, scan locations, and crafting prerequisites.
Cyclops Depth Module
How to unlock, craft, and install the lava-zone upgrade.
End-Game Progression Path
Step-by-step order for spending Ion Cubes efficiently.
Frequently Asked Questions
Where can I find Ion Cube?
Ion Cube is found inside Alien Precursor caches scattered across deep biomes and as a rare drop in the Inactive Lava Zone. Most caches are sealed behind Precursor doors that require the Laser Cutter to open.
What is Ion Cube used for in Subnautica 2?
Ion Cube is consumed by the most advanced Fabricator recipes: the Seamoth Depth MK3, the Cyclops Depth Module, Precursor Telemetry items, and other end-game equipment required to finish the story.
Can Ion Cube be crafted?
No, Ion Cube cannot be crafted at a Fabricator. It is a precursor artifact that must be looted from Alien caches or earned as a rare deep biome drop, so every cube is precious.
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