Push the bugs into green zones to make them reproduce, or into red to kill them and get points! The bugs are very social insects and will not be easy to handle for an outsider. They will change color with age, if an old bug die outside a red zone, you will lose points. Try to balance reproduction with scoring points and you will do just fine.
Disclaimer:
No bugs were harmed in making this game. I strongly suggests that you should be kind to all living things in real life.