Penguin Overlords (flash game)

Penguin Overlords is a game about penguins eating turtles. To complete a level your penguins must eat all turtles. Each level gets more difficult so you must upgrade your penguins. Points to upgrade penguins are obtained from hovering mouse pointer over bubbles that appear when a penguin eats a turtle. There are 40 levels and 4 different types of environment.

Overall this is an OK game as a time waster.

jungle environment, bubbles give points for upgrades