Carnival

Carnival is a fariground sideshow shoot 'em up. You start off with three lines of objects moving in opposing directions: bears, rabbits, ducks and alphabetical letters.

At the base of the screen is your rifle, which may be moved let and right. Below that is an allocation of bullets. The yellow ducks have a tendency of breaking line, flying down and robbing you of some bullets.

Meanwhile, letters should be shot in the correct order to spell BONUS.

Penetrate the three lines and you'll find a series of pipes rotating - shoot these for another big bonus.