Sergey Kozlov
Lurker
Isabella, a young student, had stayed up late at the library, and did not notice that the library is closed. But trying to get out of the library the girl enters the portal, through which librarians traveled to different countries and epochs, to get rare and unique manuscripts. Isabella is to go through 50 levels, before she returns home. But first intricate mazes, traps and bloodthirsty monsters are waiting for her ahead.
2nd edition - 15 levels + 2 more levels.
https://play.google.com/store/apps/details?id=com.LabStory.KozlovSergey