This is a mystery game in which a person who comes from the future of 2554 A.D. tells the story of the reason for the end of humanity (extinction of humanity).
There are many scenarios for the end of humanity, and please solve the puzzles for each scenario.
The puzzles are designed to connect cryptographic puzzles, similar to those used for brain activation (brain training), which are currently popular, to the reason for the end of humanity.
Even if you are not good at adventure games, you can enjoy it without any problem.
Recommended for people who like puzzle games and escape games!
If you solve a riddle incorrectly three times in a row, the answer will be displayed, so you don't have to worry about knowing the answer. .
*The end-of-humanity scenario is all fiction.
●November 2023 update information
Added one end-of-humanity scenario.
●Supplementary information
This game plans to add end-of-humanity scenarios on a regular basis.