Original sentence: Chemikus 2, the 5th Game of the series and the sequel of Chemikus 1, playing in a similar city, but under an advanced story.Opera Fatal, where the player has to search the notes for a blackmailed musician, and therefore has to solve an enormous number of puzzles in the opera building
Edited sentence: Chemikus 2, the 5th Game of the series (which is easy to see on the original cover) and obviously the sequel of Chemikus 1,.Opera Fatal, where the player has to search the notes for a blackmailed musician, and therefore has to solve an enormous number.of puzzles in the opera building.playing in a similar city, but under an advanced story