Explore the vast underground facility
Let's solve the gimmicks and mysteries and escape!

The game is free to play until the end.

Run around the military's secret underground facility
Explore various areas and solve the mystery.
Can you escape safely?

■ Difficulty of solving the mystery (intermediate to advanced)
It is equipped with a hint function so that even beginners who can solve the mystery can reach the answer properly.
We also have answers in case you get stuck.

Easy operation with just a tap.


■ How to play (operation explanation)
Tap the place you think is suspicious to find out.
Let's solve the mystery using the items you got.
Tap an item in the item column once to select it.
Tap the item in the item column twice to enlarge it.


Please try various things and try to escape.


■ Tips for clearing
If you get stuck, try changing your mindset.
You can break down the hints that give you clues to the answer, or convert or replace them with something else.
When it's boiled down, take a break and refresh your mood.
If you change your mood, you may be able to approach from a different perspective.

Please do your best to clear it with no hints!