The story in this choice IF is mostly linear, with only minor details determining which of the endings you eventually receive. As such, it’s not terribly exciting in terms of interactivity. On the other hand, it is really well written; the main character and the world described are both quite unique and soundly developed. The abilities and operations of the protagonist are particularly interesting and could actually be an excellent starting point for developing great and fun puzzles. I would certainly love to play a five hour parser game based on Doppeljobs.