I got lost before I knew it
Apparently trapped

The sound of quietly flowing water is eerie
I have to find a way out of here ...

Explore waterways with various gimmicks
Solve the mystery and escape!

You can play the game for free until the end

You who got lost in the underground waterway
Unravel the gimmicks and mysteries
Can you escape safely?

■ Difficulty of solving mysteries (beginner to intermediate)
It is equipped with a hint function so that even beginners 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.
Use the items you have obtained to solve the mystery.
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 try disassembling 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!