Average Playtime: 3 hours


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Knock-Knock is a survival horror game developed by Russian studio Ice-Pick Lodge on Unity.

The main difference from most horror games is that the fear factor itself is achieved by using the environment. Sounds, creepy texts, suspense - all of that affects the players.


The game's plot is full of unclear moments and allows for multiple interpretations. There is a house in a middle of the forest. It has been used as a lab and a home for three generations of its residents. The Last Resident, just like his ancestors, studies the world around him. One day, the Resident notices that his environment weirdly changes - sounds appear here and there, items get missing. The Resident wants to figure out what's going on.


The main objective of the game is to help the Resident survive in his house until dawn. This can be achieved by walking around the house and turning the light on in its rooms. Only if the player turns on the light in the room, it becomes possible to interact with the items placed inside that room. Such items are the clock, that can be used to speed up time, or hiding spots.

Lighting is an indicator for the appearance of your enemies as it turns off when someone is close to the player. The gameplay is affected by the Resident's bad memory and eyesight.

The time in the game is relative. It can pause, pass as usual, or go back. This depends on the player's actions.

Release date
Ice-Pick Lodge
Ice-Pick Lodge
Age rating
13+ Teen

System requirements for Xbox One

System requirements for PlayStation 4

System requirements for macOS

  • OS: Mac OS X 10.5 or later
  • Graphics: Intel HD Graphics 3000
  • Storage: 700 MB available space
  • Graphics: Intel HD Graphics 4000

System requirements for PC

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

System requirements for Linux

  • OS: Ubuntu 10.10 or later
  • Graphics: GPU that supports shader model 2.0
  • Storage: 700 MB available space

System requirements for Nintendo Switch

System requirements for PS Vita

System requirements for Android

2.3 and up

System requirements for iOS

iPad 2 Wifi, iPad 2 3G, iPhone 4S, iPad Third Gen, iPad Third Gen 4G, iPhone 5, iPod Touch Fifth Gen, iPad Fourth Gen, iPad Fourth Gen 4G, iPad Mini, iPad Mini 4G, iPhone 5c, iPhone 5s, iPad Air, iPad Air Cellular, iPad Mini Retina, iPad Mini Retina Cellular, iPhone 6, iPhone 6 Plus, iPad Air 2, iPad Air 2 Cellular, iPad Mini 3, iPad Mini 3 Cellular, iPod Touch Sixth Gen, iPhone 6s, iPhone 6s Plus, iPad Mini 4, iPad Mini 4 Cellular, iPad Pro, iPad Pro Cellular, iPad Pro 9.7, iPad Pro 9.7 Cellular, iPhone SE, iPhone 7, iPhone 7 Plus, iPad 6 1 1, iPad 6 1 2, iPad 7 1, iPad 7 2, iPad 7 3, iPad 7 4, iPhone 8, iPhone 8 Plus, iPhone X, iPad 7 5, iPad 7 6, iPhone X S, iPhone X S Max, iPhone X R, iPad 8 1 2, iPad 8 3 4, iPad 8 5 6, iPad 8 7 8, iPad Mini 5, iPad Mini 5 Cellular, iPad Air 3, iPad Air 3 Cellular, iPod Touch Seventh Gen, iPhone 1 1, iPhone 1 1 Pro, iPad Seventh Gen, iPad Seventh Gen Cellular, iPhone 1 1 Pro Max
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Last Modified: Jan 22, 2024

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Knock-Knock reviews and comments

Translated by
Microsoft from Deutsch
Knock-Knock is a very successful exciting And interesting 2D horror game. It is played excellently with the Light and shadow effects and also the Animations of the Figure and the Surroundings are very successful. The Atmosphere and sounds have been fantastically built into the Game and practically always come at the right time. Due to the slightly darker Comic style, everything also looks more gloomy. As far as the Playing Time is concerned, it is quite short at 4-5 Hours, but it is entertaining and perfect, because sometimes it gets a bit more difficult and therefore sometimes also frusting, on the other hand it would not be su exciting and partly creepy if it were so simple. The ghosts and ghosts that appear look fantastic, as does the Forest where you sometimes stay to find your way back to your house. The house where the Game mainly plays changes from lvl to lvl, which makes the Game more exciting. There is hardly anything to say about the Story itself. You play a Scientifics7 Researcher who is haunted by ghosts and ghosts at night, and this night has to stand over. To do this, you have to keep a certain time. But the time is turned back as soon as ghosts or ghosts run into one. This happens too often one falls into the wahnisnn and is allowed to restart the lvl. But to Help there are pictures of yourself that you can find, and that turn the time forward so that you have a good balance. Furthermore, in order to survive the Night, one has to turn on everywhere, in which one repairs or tries to repair glowing bulbs, because the spirits only come In the Dark. But it can be a light Bulb that Breaks, and then you have to sneak through the House and get to the room where the Broken Light Bulb Is located. A difference was how many Light bulbs you repair It i end effect but neither does it, but it moves more smoothly in the dark and the time then passes more slowly. Not to forget the ghosts who can haunt you. Throughout it was a lot of Fun and the Money was very well invested, and is every grusel horror and 2D games fan to Recommend.
Translated by
Microsoft from Deutsch
A difficult Case this Game. Initially it's Fun, no Question, only the Fun is quickly gone again when you're facing the Partial Whites of unfair game Mechanics. During the Nightmare Leveling you have to Survive the Night ala FNAF Without Becoming Insane and dodging all kinds of Ghosts. Ways to do this: 1) Hide 2) Change Races 3) Turn on light to perform 2) faster. 4) The ultimate Invisibility trick (more at the End of the Review) If you manage to hide the Thing is still not eaten, because the "Seekers" as I call them, so ghosts running around still sometimes find you running by, which believes I shouldn't be. Wegrennen only works as long as you are not encircled from two Sides in a Gear. Not that one is right there by one Touch, only with two the Timer is usually set back to 0 is set back from the Crowd and with that the Night is lost and starts again again. By The way, one has to teach Oneself the Meaning of Noises and spirits and the control itself, since there is no Guidance or similar and the Term for Function keys is misdescribed (E.g.: "Press A for Use" A but is for the WSAD Or Arrow Button control. The Space key is listed instead) Everything Can be divided up like this: Pro representation. The 2D Level look looks simply great-Random distribution of Interior decoration (Hiding Places)-The ultimate Invisibility Trick Contra-Partly unfair Ghost distribution-ghosts find one in the Hiding Places-No Way of what works with the Ghosts (Learning by Doing)-Key assignment is incorrectly explained in the Game-German Texts are full of Errors-Objects appear in front of each Other, so that the Front cannot be used. -The ultimate Invisibility Trick After all this, we now come to the Most Important Thing:------> The ultimate Invisibility Trick
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