Duck Hunt Ultimate, originally known as Duck Hunt Ultimate: The Duck Apocalypse, was first conceived by Austin Neal when he started talking about ducks on Fantendo.
Duck Hunt Ultimate is a survival/high score game. The objective is to stay alive for as long as possible without being killed by ducks, and while you are alive, to get a high score by killing ducks. You have a special laser rifle to shoot with. The game itself takes place during an apocalypse where ducks have taken over the earth.