In this game, your goal is to find the three letters that make up the password. When you find out, unlock the lock and move on to the next level. I wish you luck, this game is only for the smartest.In this version you will find 100 levels.There is no store, you can be rewarded with coins by watching ads and helping to keep the game free. The click/touch do all actions! The questions are of different themes and the letter will always correspond to the first letter of the answer; in the end, you’ll find out what the answer to the question was and even the tip.