Release date: May 2010.
Engine: Game Maker 7.0
Keyword is a puzzle game, in which in every of 30 levels you need to find the hidden password. The right password opens the next level. However, finding every password is a challenging logical task, since every level is a unique puzzle, different from all others.
30 different levels with unique gameplay in every of it.
Really hard puzzles.
Game walkthrough (in Russian). Please, don't hurry to look into this article.