Summary: "Tunnel Master" is a very easy game. Who can be played if you can swipe. Player serves as a Tunnel Master and continues digging a tunnel. For completion of a subway system in the city. Remuneration can be obtained when you continue digging a tunnel. By the remuneration, you could get more powerful equipment. Then, digging work becomes more comfortable. Treasure is also in a tunnel. It also becomes the purpose of a game to get the treasure.