Underwater World — cheap CD keys, compare prices
Is it worth buying?
- The price is above its low (was €0.38), but within a reasonable range. Notify me on a drop →
Estimate based on public reviews (Metacritic/Steam) and price history — the final call is yours.
About the game
Underwater World is a vividly colored 2D platformer built around demanding, high-energy gameplay, sending players through a series of levels as Plankton. LTZinc developed the game, HandMade Games published it, and it launched in 2021.
Best price today
€0.49
all-time low: official €0.49 · keyshop €0.38 (+29%)
The cheapest Underwater World key right now costs €0.49 at Steam — the best of 4 compared offers. The lowest price we have recorded for this game: €0.38.
The average low over the past 4 months was €0.43.
Prices as of
Steam best price Official store
Epic Official store
No offers match these filters — try widening them.
Listed seller price shown — payment fees may vary by method.
Underwater World prices by store 4
| Store | Type | Price |
|---|---|---|
| Steam | Official store | €0.49 |
| Driffle | Marketplace | €0.84 |
| G2A | Marketplace | €1.01 |
| Epic | Official store | €31.49 |
Lowest — official stores
€0.49
Jul 2026
Lowest — keyshops
€0.38
Jul 2026
Price history
last 89 daysMonthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €0.49 | €0.84 |
| Sept 2026 | €0.49 | €0.84 |
| Aug 2026 | €1.99 | €0.38 |
| Jul 2026 | €0.49 | €0.38 |
Lowest in-stock price per month from our price history; the current month is the low so far.
How to activate your key
- Steam key — open the Steam client → Games → Activate a Product on Steam → enter the key. Stores with this activation: Steam, Driffle, G2A
- Epic key — open Epic Games Launcher → profile (top right) → Redeem Code → enter the key. Stores with this activation: Epic
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All-time low so far: €0.38
System requirements
| Minimum | |
|---|---|
| OS | Microsoft® Windows® XP / Vista / 7 or higher |
| Processor | Dual Core 2.0 GHz or higher |
| Memory | 1024 MB RAM |
| Graphics | 500MB |
| DirectX | Version 7.0 |
| Storage | 200 MB available space |
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About this game — FAQ
Can Underwater World be played single-player?
Yes, Underwater World is a single-player game.
What languages does Underwater World support?
Underwater World is available in: English.
FAQ
Where is the cheapest place to buy a Underwater World key?
The cheapest Underwater World key is currently sold by Steam for €0.49. That is the best of 4 offers we compare; prices are refreshed regularly. The lowest price we have ever recorded for this game: €0.38.
How much does Underwater World cost?
Underwater World currently costs from €0.49 — the cheapest offer across the stores we track.
Is Steam an official store or a keyshop?
Steam is an official store — keys come directly from the publisher or an authorized distributor.
Are keys from these stores legal?
Buying is legal — keys come from the grey market, so a small deactivation risk exists. So before paying, check the seller's buyer protection.
Which key region should I pick?
Global activates everywhere. Regional keys (Europe, North America, RU-CIS) only work on accounts from that region — use the Region filter to match your account.
What is an activation platform?
The service where the key activates — Steam, GOG, Epic or the publisher's platform. A key for one platform won't work on another, hence the separate filter.
What's the difference between editions?
Standard is the base game; Deluxe usually adds an expansion or bonus content. The edition filter shows exactly that variant, with no mixed prices.