• Knock-Knock Screenshot 1
  • Knock-Knock Screenshot 2
  • Knock-Knock Screenshot 3
  • Knock-Knock Screenshot 4
  • Knock-Knock Screenshot 5
  • Knock-Knock Screenshot 6
  • Knock-Knock Screenshot 7
  • Knock-Knock Screenshot 8
  • Knock-Knock Screenshot 9
  • Knock-Knock Screenshot 10

Region restrictions

Activates within United States
This game has world-wide activation. No known region restrictions in effect.



Mac Reqs Minimum Supported Will It Run?
Mac OS X10.5.8Download the MacGameStore App to compare your Mac's information in real-time.

Get the Mac App
64bit SupportNo
CPU TypeIntel Mac Only
CPU CoresAny
CPU SpeedAny
System RAMAny
Drive Space700 MB
Video RAMAny
Video (ati)Any
Video (nvidia)Any
Video (intel)Intel HD Graphics 3000 *
* Unsupported Video Cards: Intel GMA 900, Intel GMA 950, Intel GMA X3100, Intel HD Graphics

Reviews & Comments

From 7 Shoppers
  1. Very odd

    Played this for an 1hr or so and had no idea if I was progressing in the game. Super dark also.

    by chigh, Australia - Jan 14th 2015
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  2. Patience needed

    It's a beautifully designed game and you can spend hours playing it. It's a bit annoying when you get lost or have to repeat the level again, but it's worthy.

    by lokababy, Spain - Dec 17th 2014
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  3. Creepy, and strange, but fun and one more time creepy!

    I agree with the other review. I'm still playing it but it's really really weird and creepy. I'm not entirely sure what I'm doing in the game, what I should do or if I do it the right way. Still, the game is positively strange for me, and I like this kind of games where you have to work out what is really happening but even if you are almost sure, there is always a chance that you're wrong. :) confusing as hell but it gives a lot of fun to those who like that kind of gameplay :)

    by niezapomiinajka, Poland - Dec 23rd 2013
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