The core objective of Rootworld is trying to hit as many boxes as you can with as few taps as possible. For each box one fluffy creature will be rescued.
Not only will new gameplay features be unlocked throughout the levels but your character will also become more powerful as it gains new abilities and upgrades.
As your character evolves so will you. Sometimes it's not obvious how some of the levels can be completed and you might have to stop for a while and think outside the box. After all you ARE the one outside the box unlike your friends.