In Meeblings, you have to rescue a specified number of good-for-nothing Feeblings towards the exit to the next level. To this end, you use the abilities of your special Meeblings:
Your Hereling draws other Meeblings towards itself.
Your Thereling pushes nearby Meeblings away.
Your Gravling reverses gravity.
Your Sizzling burns holes in the ground.
Your Treebling grows into a leafy tree.
Finally, your Zapling turns electrical stuff on and off.