A critter hides behind a secret number. Find it with as few questions as you can, or hide a number of your own and let Pip find it.
Tap a number, then tap Ask to ask "Is it bigger than that?". The half it can't be in pops away, and the bar at the top shows every number that is gone. Blue shows what stays if the answer is No, orange shows what stays if it is Yes. Ask about the middle and half the numbers go away every time. Find the critter within the star count for a gold star, and it joins your friends. "Is it...?" is a lucky guess. Tap You hide, think of a number, and answer Pip's questions with Yes or No.