King Boo — cheap CD keys, compare prices
Is it worth buying?
- Reviews are excellent. (Steam 98%)
- The price is well above its low (was €0.59) — worth waiting for a drop or setting an alert. Notify me on a drop →
Estimate based on public reviews (Metacritic/Steam) and price history — the final call is yours.
About the game
Players control a character named King Boo, who has lost his royal ornaments and must recover them before he's allowed to return to the castle. It's a simple, colorful adventure aimed at young players. NDOgames both developed and published the title in 2021.
Did you know?
On Steam it has a remarkable 98% positive reviews (Very Positive) from 231 reviews.
Best price today
€2.99
all-time low: official €0.59 (+407%)
The cheapest King Boo key right now costs €2.99 at Steam. The lowest price we have recorded for this game: €0.59.
The average low over the past 4 months was €2.39.
Prices as of
Steam best price Official store
No offers match these filters — try widening them.
Listed seller price shown — payment fees may vary by method.
Lowest — official stores
€0.59
Jul 2026
Price history
last 89 daysMonthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €2.99 | — |
| Sept 2026 | €2.99 | — |
| Aug 2026 | €2.99 | — |
| Jul 2026 | €0.59 | — |
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
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All-time low so far: €0.59
System requirements
| Minimum | |
|---|---|
| OS | Windows 7 (SP1+) and Windows 10, 64-bit versions only. |
| Processor | X64 architecture with SSE2 instruction set support |
| Memory | 8192 MB RAM |
| Graphics | DX10, DX11, and DX12-capable GPUs |
| DirectX | Version 11 |
| Storage | 1000 MB available space |
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About this game — FAQ
Can King Boo be played single-player?
Yes, King Boo is a single-player game.
Does King Boo support a controller/gamepad?
Yes, King Boo has full controller support.
What languages does King Boo support?
King Boo is available in: English, Dutch.
FAQ
Where is the cheapest place to buy a King Boo key?
The cheapest King Boo key is currently sold by Steam for €2.99. The lowest price we have ever recorded for this game: €0.59.
How much does King Boo cost?
King Boo currently costs from €2.99 — 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.