Grabbit was one of the first games I ever created and it still remains one of my favourites today.
Playing as a frog, your goal is to catch as many bugs as you can before the time runs out. Everytime you catch 10 bugs you are rewarded with a time extension.
You have to watch out for tongue strain though. The further you shoot, the more tongue strain you build up. If it gets to high then you will not be able to shoot as far, making it harder to catch more bugs.