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All your operation needed in the gameplay is inputting any numbers.The main character head to a certain door.Along that way, other monsters approaches him and one-sidedly start a game with number.Other monsters is going to makes him an easy target. The main character has no way of explaining the game rules to you.Needed observation and consideration for inputting any advantageous number and win.Open the door with him.The latest version contains 7 levels: 5 normal levels, 1 hidden level, and 1 sp...