Take a sling, put in an acorn and shoot down all the bats. They want to take all the fireflies, so don’t let them do it!
Starry Nuts is nice looking arcade shooter game where you use a slingshot for shooting down bats. The task is quite easy at first but later the bats have more hitpoints so more hits are necessary. When you hold in one level and you have still some tries you continue. For gained stars buy upgrades for the slingshot and try some bonus items.