Shelldiver Submarine and Tool Upgrades: Plan Your Dive
Plan Shelldiver submarine and tool priorities using confirmed upgrade categories, while keeping hidden costs, effects, and order clearly unknown.
Which tools and upgrades are officially described?
The official Steam description names a bubble gun for chasing jellyfish and a laser blaster for dismantling material near the ocean floor. It says that human trash, crystal rocks, mushrooms, and other components can be taken apart for parts, then used to upgrade the submarine, tools, and more.
That confirms upgrade categories, not a spreadsheet of their costs or effects. The jellyfish guide covers the bubble-gun side of the loop, while the depths and biomes guide explains why exploration facts need a separate evidence boundary.
How can you choose a priority without a fake tier list?
Choose the goal shown by the current game, then check whether the visible requirement advances that goal. A cautious planning framework is:
| If your current goal is… | Look for the documented system that relates to it | Do not assume… |
|---|---|---|
| More jellyfish activity | The bubble-gun and collection loop | Exact catch rates or a hidden best gun level. |
| More materials | The laser-blaster and dismantling loop | Every object has the same reward or respawn rule. |
| A longer or deeper expedition | The submarine and oxygen-related choices | A fixed depth requirement or cost. |
| A stronger next dive | The visible tool, submarine, or skill-tree option | A universal best purchase order. |
The skill-tree guide is the companion page for perk choices. Use it alongside the actual in-game requirements, not as a replacement for them.
Which costs and effects are unknown?
The checked official material does not provide exact upgrade names, prices, prerequisite chains, tool statistics, salvage yields, damage values, oxygen values, or a recommended order. It also does not establish whether every kind of scrap appears in every biome or depth.
For that reason, this page does not promise a fastest route or label any tool upgrade mandatory. A future versioned table can be useful only when every number has a reproducible in-game observation or an official reference.
Sources and update status
This page was checked on September 2, 2026 against the official Shelldiver Steam listing.
Related Articles
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Shelldiver Jellyfish Guide: Capture, Sell, and Reinvest
Understand Shelldiver's documented jellyfish capture-and-shop loop, with clear boundaries around unknown locations, values, and type lists.
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Shelldiver Skill Tree Guide: Choose Perks for Your Goal
Use Shelldiver's confirmed branching skill-tree concept to choose a goal, while keeping undocumented perk effects, costs, and tiers explicit.
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