Guess the Code

A simple game to find the secret code based on guesses and hints. It consists of four levels. Each level has it's own characteristic code and the code is random, different all the time you generate it. Level one deals with codes containing only numbers. Level two deals with codes containing capital alphabets. Level three deals with codes containing both capital and small alphabets. Level four deals with codes containing numbers as well as capital and small alphabets. Level five deals with codes containing numbers as well as capital and small alphabets and special characters !, #, $, * or ~. Your objective is easy, try finding the code in least number of guesses. After every guess a hint would be provided which helps to remove ambiguity of what the code could be.