Short answer: buy the bigger belly first, then the extra straws, and leave the mouth vacuum and the pocket whirlpool for later. Every upgrade in the blue SHOP buys the same thing in the end — more water moved per trip — but only belly size shortens the walk back to the press, and in the first half of the game the walk is the slow part.
The four upgrades, one by one
The shop sells four things. These are the publisher's own descriptions, with what they mean in practice.
Bigger belly
What the shop says: increases how much water you are able to hold before needing to press.
What it does in practice: it makes each trip worth more. Your belly is the container you fill at the shoreline, and its size decides how long one loop between the water and the press can be. Nothing else in the shop changes that number.
When it is the best buy: every time, until you stop losing time to walking. The first few levels of belly are the fastest improvement available in the game, because at the start you spend most of your run moving between the water and the press rather than drinking.
When to skip it: once a full belly already gets you to the whale skeleton and back without a refill, more capacity is no longer what is holding you back — that is when speed upgrades start paying.
Extra straws
What the shop says: expands your drinking capacity.
What it does in practice: it raises the rate at which you pull water in, so the same belly fills in less time. It does not make the belly bigger; it changes how quickly the belly fills.
When it is worth it: right after belly capacity, and again whenever you notice that you are standing in the water for a long time before the belly tops out. That is the exact symptom this upgrade treats.
When to skip it: if the belly fills before you can get far enough out to make the trip worth it, more straws will just fill a small container faster. Capacity first.
Mouth vacuum
What the shop says: a new tool for pulling in water.
What it does in practice: it is a tool, not a passive stat, and you reach it with 1 / 2 / 3. The shop description is short and the publisher does not spell out the numbers, so the honest reading is: it changes how you drink rather than how much you can hold, and it becomes useful when filling the belly is the part that feels slow.
When to buy it: after the belly and the straws have both been levelled a few times, and you still feel like the fill is the bottleneck.
When to skip it: on a fresh run, it is premature. A new tool in the third slot does nothing for a player whose real problem is walking a small belly back and forth.
Pocket whirlpool
What the shop says: another tool unlocked through the shop.
What it does in practice: it is the last tool line and the late-game option, in the same way the vacuum is the tool you graduate into. The publisher files it as a tool unlocked through the shop rather than as a flat upgrade, which is why it sits last in this guide: it is the thing you buy when the loop already runs well and you want the volume of the whole loop turned up.
When to buy it: after the belly, the straws and the vacuum are all in place, and you are working through the later oceans — cola, lemonade, slime, lava.
When to skip it: everything before that. Buying a late tool early gives you a bigger number on the shop screen and a slower run.
The order to buy them in
Four stages, each with a rule you can check yourself instead of a shopping list.
Stage 1 — the first few purchases go into the belly
Rule: if the walk between the water and the press takes longer than filling the belly does, your belly is too small. Keep buying capacity until that stops being true. This stage covers the first ocean comfortably.
Stage 2 — then speed, into the belly you already own
Rule: once a full belly survives a trip out to the wreck and back, put salt into straws. Speed without capacity fills a small cup quickly and still leaves you walking. Capacity without speed means fewer, longer stops — which is fine, and better than the reverse.
Stage 3 — tools, when the fill is the slow part
The mouth vacuum earns its place when you can already carry a proper belly, the walk is no longer the problem, and the remaining wait is the drinking itself. Buy it then, not before — and remember it lives on 1 / 2 / 3, not on a new key.
Stage 4 — the whirlpool and the later oceans
The pocket whirlpool belongs to the stretch after the whale skeleton, when the distances are at their longest and the sums are at their biggest. If you are still on your first ocean, this line is not your problem yet.
The arithmetic behind all of this
A trip has two halves, and only one of them is dramatic.
- Drinking time — how long the belly takes to fill. Straws, vacuum and whirlpool buy this down.
- Travel time — the walk out and the walk back. Only belly size buys this down, because a bigger belly means fewer round trips for the same amount of water.
Early in a run, the sea is close and the belly is tiny, so travel dominates: most of your session is walking. That is why capacity first is not a preference, it is what the game's own geometry rewards. Later, when the belly is large and the shoreline has retreated to the sunken city, drinking time dominates — and that is when the speed line and the tools start to matter.
Two consequences that are easy to miss:
- Walking home is optional. T takes you back to the island instantly. On deep runs this removes the return half of travel time entirely, which makes a big belly even better value.
- Buying one level of everything is the worst of both worlds. A small improvement to capacity and a small improvement to speed leaves you slow at both. Depth beats breadth in this shop.
The Sky Duck's gifts
The Sky Duck hands out boons you can collect around the map, and E opens its gifts. This is the only free progression in the game: it costs no salt and no trip. If a gift is on your path, open it — and if you are deciding between two routes, take the one past the duck.
Why there is no price table on this page
You will find other guides quoting exact salt prices for each level. We do not, for two reasons.
- The publisher does not list prices. The official game page describes the four upgrades and nothing about cost, and the game is still receiving updates (the publisher shows a November 2026 last-update date). Prices are exactly the kind of detail that changes between builds.
- The published price tables disagree with each other. Guides that do quote numbers contradict one another on how many levels exist and what the first one costs. Copying one of them would mean printing a number we cannot stand behind.
What does not change with a patch is the shape of the problem: travel time versus drinking time. The order above is built on that, so it keeps working after the numbers move. If you want the exact current cost of a level, read it in the shop in-game — it is on the screen, and it is always right.
Drink the Ocean upgrades: FAQ
What should I upgrade first in Drink the Ocean?
The bigger belly. It is the only upgrade that reduces the number of trips you have to walk, and walking is the slowest part of the early game.
How many upgrades are there?
Four lines: bigger belly, extra straws, mouth vacuum and pocket whirlpool. The belly and the straws are the passive upgrades; the vacuum and the whirlpool are tools you switch to with 1 / 2 / 3.
Do upgrades carry over to a new ocean?
The upgrades you bought stay with you when you pull the plug and refill the map with a new ocean — the publisher describes the next ocean as stronger, and you meet it with the setup you already paid for. Your progress is still not saved between sessions: the publisher lists save-progress as “No”, so closing the tab restarts the run.
Is the pocket whirlpool worth it?
Yes, eventually — it is the late-game line, and it is where the big numbers come from. No, not early: bought before the belly and the straws, it changes nothing about the walk that is actually slowing you down.
Do upgrades change how the game looks?
No. Nothing in the shop is cosmetic. Each purchase is meant to move more water per trip, which is also why the shop is short: four lines, one job.
Where is the shop again?
The blue SHOP pad on the island, next to PRESS. Salt goes in at PRESS first — a full belly is worth nothing until it is squeezed into salt.
If you have not finished a first ocean yet, start with the how to play Drink the Ocean guide — it walks through the eight steps of a run and what the shipwreck, whale skeleton and sunken city tell you about depth. The game itself is running on the home page.