Nientum - Op.ZERO — cheap CD keys, compare prices
Is it worth buying?
The price is at or near the lowest we've tracked — a good time to buy
Buy · Steam €15.60
About the game
Nientum - Op.ZERO is a 2D action-adventure where the plot moves forward as you adjust the stage through music. It follows a play performed by Aleph and Liora, who have lost their memories, set on a lovely yet unsettling stage hiding the secret of a forgotten theater. Your decisions shape how the play ends and what becomes of the two. QueseraGames developed and published it in 2026.
Best price today
€15.60
· · 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 €14.04
- On Steam
- €15.60
- lowest in tracked period
- €15.6014 Oct
The cheapest Nientum - Op.ZERO key right now costs €15.60 at Steam. (Prices as of )
Offers 1 · PC · from €15.60
Prices as of
No offers match these filters — try widening them.
Listed seller price shown — payment fees may vary by method.
Offers that are not a key (Gift) — show (1) Gift: the game arrives as a Steam gift and works only in the region it was bought for.
These are not ordinary keys. A gift is usually region-locked and arrives through someone else's account — if the region does not match, the game will not activate. An account means you get someone else's login: the game never becomes yours, and it breaks Steam's rules. A DLC or a bundle is not the base game. That is why none of them count towards the price at the top of the page.
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Lowest official since we started tracking (Oct 2026)
€15.60
Oct 2026
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 | Recommended | |
|---|---|---|
| OS | Windows 10 64-bit | Windows 10 64-bit |
| Processor | Intel Core i3-2120 | AMD FX-4350. | Intel Core i3-2120 | AMD FX-4350. |
| Memory | 4 GB RAM | 4 GB RAM |
| Graphics | Nvidia GTS 450 | AMD Radeon HD 5750. | — |
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About this game — FAQ
Can Nientum - Op.ZERO be played single-player?
Yes, Nientum - Op.ZERO is a single-player game.
What languages does Nientum - Op.ZERO support?
Nientum - Op.ZERO is available in: English, Japanese, Korean, Simplified Chinese, Traditional Chinese.
FAQ
Where is the cheapest place to buy a Nientum - Op.ZERO key?
The cheapest Nientum - Op.ZERO key is currently sold by Steam for €15.60. The lowest price we have ever recorded for this game: €15.60.
How much does Nientum - Op.ZERO cost?
Nientum - Op.ZERO currently costs from €15.60 — 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.