Fast paced, fast typing, arcade, die and retry game. De-coding Armageddon is a game to practice your speed and reflexes, perfect for when you are waiting on another game or whether you just wanna kill sometime.
Stay alert for the missiles that come to destroy the earth and their codes to deactivate them. You will have to write the code corresponding to each missile to deactivate it so that it does not impact.
The longer you hold on, the faster they will go. Good luck.