Wondering how is this game?

This new puzzle with your two friends, Phineas and Ferb will test your skills and abilities to solve puzzles in a short time. You can choose from 5 different puzzles with increasing difficulty, namely the first is 12 pieces for beginners, then 24, 48, 64 and, for those who feel the call really adept at solving these "mysteries" with 99 tracks. The picture to be assembled is the same, just different number of pieces. The picture seems to portray a new attempt by the Dr. Doofenshmertz ditruge Agent Perry, with a huge and frightening invention, just as, of course, the brothers are there to save his pet! Try to analyze how more and more closely the image before choosing the number of pieces that you think you can match them to know how best to solve the puzzle picture and as soon as possible! Success.