Firewall is an iPhone game application simulating a network security wall that has to be broken. Depending on the successfully sessions each user completed, he accumulates points and his level increases. More points are rewarded for completing sessions with higher difficulty. The current level and progress will be shown on the main screen. Leaderboards can be displayed for a better world wide position overview.

The code to be broken is formed of 4 digits, and after each trial, if the user has failed and the number introduced is greater and the most closer limit to the code that has to be broken, the certain number will be displayed above. Following the same idea, if the number introduced by the user is wrong but it is smaller and represents the closest value to the code that has to be broken it is displayed below.

Good luck !!!