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Escape from the Underground Waterway is an adventure game developed by なんかいいね.
Explore the waterways, solve the mystery and escape!
You can play the game for free until the end.■ Easy operation
It is equipped with a hint function even beginners can reach the answer properly.
■ How to play (operation explanation)
Tap the place you think it is suspicious.
Use the items you have obtained to solve the mystery.