"Want my treasure? If you want, take it! I put all the treasures there!"

The man who symbolizes freedom - Joe, the words spoken before death, let people all over the world go to the top prisons around the world.

People in the world refer to this treasure hidden in prison as a "One-Block". In the prison world, Mr. Unchain has a dream to become the freest man in the world. He is constantly rampant in prisons around the world and is now a rising star in the prison world!

Under the sea, the submarine prison with a depth of 352 meters deep exceeds the pressure of the human body to withstand the limit. The intelligent and courageous Mr.Unchain will soon challenge this prison that the world thinks cannot escape!

Stunning art style, exquisite puzzle design, use limited props, break through layers of puzzles, limit brainstorming, and come together with Mr.Unchain to let the world tremble!