I noticed that Chaos;Head’s divergence ratio is different than the one of Steins;Gate and Robotics;Notes. What was the point of that series to begin with since nothing basically happened?


1 Answer 1


Because the point of Science Adventure series is not really about divergence ratio or the same worldline, but just due to the official genre/theme.

Back in 2008, when Chaos;Head was first released, the genre was officially given as "Delusional Science Adventure" (妄想科学ADV). At that time, there was no plan of making this into a series.

It was not until 2009 when Steins;Gate was released with the genre as "Supposition Science Adventure" (想定科学ADV), making it a series and also the 2nd entry.

This is then followed by:

  • Robotics;Note: Expansive Science Adventure (拡張科学ADV)
  • Chaos;Child: Delusional Science Adventure (the same as Chaos;Head)
  • Occultic;Nine: Paranormal Science Adventure (超常科学ADV)
  • Anonymous;Code: Supposition Science Adventure (the same as Steins;Gate)

The series emphasizes real scientific elements heavily while still allowing them to mix with fictional elements. This includes, but not strictly limited to, time travel and divergence ratio.

Main reference: Japanese Wikipedia on Science Adventure Series

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