This is a puzzle game about decryption where you solve math problems to gradually reveal a hidden coded word. Each correct answer uncovers one or more letters in the cipher word, bringing you closer to full decryption. A wrong answer costs you a life, and each round is time limited, adding tension to the process. Choose your difficulty at the start, which affects the timer speed and the complexity of calculations. Your score depends on how quickly you solve problems and how many stages you complete, with bonus points for fully deciphering the word. The game demands fast mental arithmetic and careful attention, since every mistake reduces your remaining lives. The interface features a retro terminal style with pixel graphics and sound effects for every action.