100 hidden aliens — cheap CD keys, compare prices
Is it worth buying?
Reviews are solid (Steam 84%) · The price is well above its low (was €0.59) — worth waiting for a drop or setting an alert Notify me on a drop
About the game
100 hidden aliens is a hidden-object game set in a cosmic setting. It features black-and-white, hand-drawn cartoon-style graphics and is suitable for players of all ages.
Best price today
€0.99
· · check “Region” on the seller’s page
Steam · Official store · Steam
Global key · check “Region” on the seller’s page
You pay Steam directly · same price as on their site
Notify me when it drops below €0.89
- On Steam
- €0.99
- all-time low
- €0.5919 Jul
- Average low, 5 mo.
- €0.75
The cheapest 100 hidden aliens key right now costs €0.99 at Steam. (Prices as of )
Offers 1 · PC · from €0.99
Prices as of
No offers match these filters — try widening them.
Listed seller price shown — payment fees may vary by method.
Top 10 Casual games
- 1
Moon Sweepers PC · 2026 from €8.99 - 2
Marvel Rivals PC · 2024 - 3
Scam With Your Friends PC from €10.25 - 4
Once Human PC · 2024 - 5
The Wolf Among Us Remastered PC from €17.91 - 6
Terrible Lizards PC · 2026 from €17.99 - 7
VRChat PC · 2017 - 8
Dressmaker PC from €15.47 - 9
ATMOSFAR PC from €22.94 - 10
Disney Dreamlight Valley PC · 2023 from €15.39
Lowest official since we started tracking (Aug 2026)
€0.59
Sept 2026
Monthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €0.59 | — |
| Sept 2026 | €0.59 | — |
| Aug 2026 | €0.99 | — |
| Jul 2026 | €0.59 | — |
| Jun 2026 | €0.99 | — |
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
System requirements
| Minimum | |
|---|---|
| OS | Windows 7, 8, 10 |
| Processor | 2.3 GHz Dual Core |
| Memory | 1024 MB RAM |
| Graphics | Intel HD 4000 |
| Storage | 10 MB available space |
Similar games
About this game — FAQ
Can 100 hidden aliens be played single-player?
Yes, 100 hidden aliens is a single-player game.
What languages does 100 hidden aliens support?
100 hidden aliens is available in: English.
FAQ
Where is the cheapest place to buy a 100 hidden aliens key?
The cheapest 100 hidden aliens key is currently sold by Steam for €0.99. The lowest price we have ever recorded for this game: €0.59.
How much does 100 hidden aliens cost?
100 hidden aliens currently costs from €0.99 — 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.