- Price range
- $1.33–$14.65
- Last updated
- 29 December 2025, 01:03
- Offers
- 8
- Stores
- 7
Compare CD key prices for Knock-knock in 7 game stores, and choose the best deal from 8 offers. Below you will find up-to-date prices for Knock-knock on Steam platforms, which can be activated in Global and Europe regions.
Knock-knock sale, discount, and price comparison in one place!
We track thousands of products from 7 stores to find the best prices for Knock-knock and other games. For some store we even have discount coupon codes to help you buy Knock-knock even cheaper!
Get Knock-knock for free — is it possible?
Even though Knock-knock free download is unlikely, you can take advantage of our price comparison engine and find best prices right now, or create a price alert and get notified once Knock-knock is on sale and hits the price you want.
Can I activate Knock-knock in my region?
Most distribution platforms (like Steam) have regional restrictions and different prices for each game: e.g., Knock-knock will cost more for customers from United States than from Argentina, but customers from US cannot activate Argentina’s Knock-knock key.
We show this regional restrictions information under “Region” in our filters and in the list of Knock-knock offers. For instance, “Knock-knock Global” means it can be activated in any country, “Knock-knock Europe” – only in Europe, and “Knock-knock Japan” — in Japan only.
However, some shops do not provide regional information, so the best way to make sure Knock-knock will be activated in your region is to visit shop’s product page: there’s always a special block next to the price that shows if it can be activated in your country or not.
What is the difference between Knock-knock offers from official stores and keyshops?
Official stores get their Knock-knock keys directly from game developers or publishers, while keyshops resell keys from unknown sources.
Keyshops are usually cheaper than official stores, but they are riskier. We recommend reading keyshops’ and sellers’ customer reviews first. Also, most keyshops have buyer’s protection programs to guarantee a refund in case Knock-knock key is not working.
