It gets a bit repetitive after a while. At first, the "game over" screens seemed random. I read the instructions and didn't really understand it. Every 90 seconds - what resets the timer exactly? Do you have to enter the "buy notes" screen, or is touching the yellow thing sufficient?
Also, I couldn't figure out the first clue - To *MAK* si "meow"? "si" isn't even an English word.