The listing, The Butterfly Sign: Human Error[steam key] has ended.
http://store.steampowered.com/app/555260/The_Butterfly_Sign_Human_Error/
The Butterfly Sign: Human Error - the second Chapter of a detective in the first person, in which we will play for the only survivor of a major terrorist attack. The main character is the only witness to the incident and from its memories determines his fate. So he decided on a desperate measure: he takes an experimental drug “Rammax”, which puts it in the halls of your own mind and restores all the events with perfect accuracy. While in his own memoirs, the protagonist has grain for grain, the evidence over the evidence, seek out the guilty...
The main feature of the second Chapter of the game is the idea of multi-level memories. Rammax works on the principle that the main character can do anything that he's ever known, while retaining his freedom of action and choice within the memories. That means finding in their memories the camera with Ramexam, in theory, the main character can use it...
The second distinguishing feature of this episode is a spatial confusion inside the memories, in other words, background space. Some memories will cause an error in memory, creating a spatial cycle: trying to leave the location in any way, the main character will fall into it again and again, and so on to infinity. To solve the puzzle, break the loop and get out, will have to poraskinut brains.
------------------------------------------------------------------------
if you have any problems with the activation key please provide screenshots.