Knock-knock

Knock-knock cover art -80%
Genres
Adventure, Casual
Released
4 Oct, 2013
Developer
Ice-Pick Lodge
Publisher
Ice-Pick Lodge
Metacritic
57 / 100

Where will you play?

8 stores compared

  1. SteamBest price -80% $1.99 $9.99 Get Deal
  2. YuplaySteam key · US -72% $2.77 $10.06 Get Deal
  3. YuplaySteam key · Europe -72% $2.77 $10.06 Get Deal
  4. YuplaySteam key · Canada -72% $2.77 $10.06 Get Deal
  5. YuplaySteam key · UK -72% $2.78 $10.06 Get Deal
  6. Kinguin★ 4.6Steam key · Global -66% $3.47 $10.06 Get Deal
  7. Eneba★ 4.4Steam key · Global -63% $3.74 $10.06 Get Deal
  8. GOGGOG key · UK $10.53 Get Deal

Knock-knock price history

£1.39 today90-day low £1.39 (27 Oct 2026)Lowest recorded £1.3990-day average £1.39

£1.33£1.39£1.45 27 Oct 2026Today £1.33£1.39£1.45 27 Oct 2026Today

Today's price is the lowest we've seen in the last 90 days. Cheapest UK-working PC key across the stores we compare, any edition; tracked since 27 Oct 2026.

$1.99 today90-day low $1.99 (27 Oct 2026)Lowest recorded $1.9990-day average $1.99

$1.93$1.99$2.05 27 Oct 2026Today $1.93$1.99$2.05 27 Oct 2026Today

Today's price is the lowest we've seen in the last 90 days. Cheapest US-working PC key across the stores we compare, any edition; tracked since 27 Oct 2026.

€1.99 today90-day low €1.99 (27 Oct 2026)Lowest recorded €1.9990-day average €1.99

€1.93€1.99€2.05 27 Oct 2026Today €1.93€1.99€2.05 27 Oct 2026Today

Today's price is the lowest we've seen in the last 90 days. Cheapest Europe-working PC key across the stores we compare, any edition; tracked since 27 Oct 2026.

About this game

There is an unusual cabin deep in the woods. It had served as a laboratory and a dwelling for three generations of Lodgers.

But as of late the latest Lodger has been noticing weird changes in familiar surroundings; things are missing, noises and rattle heard. Something odd is coming out of the woods. Come night, it seems like someone's made himself at home in the twilight of rooms, attics, and cellars.

You need to stay awake and sane till dawn.

The Lodger is wandering the rooms, evading the unknown, counting minutes till morning. But it's only in the night that he can solve the main puzzle and find the answers. What's going on? Are the Guests real, or are they just figments of his insomniac imagination? What'd happened to the forest? What's happening to the cabin? Is there a line between reality and imagination?

Gameplay details

• Hide! Play hide-and-seek with denizens of your nightmares.

• Don't look now! The goal of each night is to reach dawn while still sane.

• Fill in the gaps. The house aids the Lodger. You only have to fix it up and keep it in order.

• Seek. The Lodger has lost something very important. The reason for what is happening is somewhere inside. Everything that is happening can be explained, you only need to find the key and bring it to light.

• Wait. In this game you need to watch and listen carefully. Inspect and scrutinize. You only have to last until the sunrise.

• Follow the rules of the game! Of course you must first understand the game being played with you.

Trailer

Screenshots

Knock-knock screenshotKnock-knock screenshotKnock-knock screenshotKnock-knock screenshotKnock-knock screenshotKnock-knock screenshotKnock-knock screenshot
Screenshot
Use the ← → keys

PC system requirements

Minimum

OS *
Windows XP or later
Graphics
GPU that supports shader model 2.0
Storage
700 MB available space

Knock-knock prices: questions & answers

What is the cheapest Knock-knock price for PC?

The cheapest Knock-knock PC key right now is £1.39 at Steam, 80% below the usual price. We compare 6 offers from 5 stores for PC, and prices update at least twice a day.

Cheapest price today: £1.39 at Steam (80% off, usually £6.99). We compare 5 stores for Knock-knock, and prices update at least twice a day. Prices can change; the store's checkout price is final. Platform and region details come from each store's listing; the store's product page is final. Zemly may earn a commission if you buy through links on this site, at no extra cost to you (affiliate disclosure).