If you are using the demo version of Tasty Planet: Back for Seconds, consider purchasing the full version. Much of the game is only available in the full version.
Just a few of the benefits available in the full version:
Eat your way through six time periods.
Hundreds of tasty things to eat.
Unlock the bonus modes and play even more levels.
Play the game with a friend in cooperative mode.
Compare your high scores with players around the world.