Carnival Massacre takes you out to the fairground, where Butcher Bill and Ruthless Rick are indulging in a bit of Bank Holiday human sacrifice.
That (of course) is where you come in, reckless hero that you are. The cartridge loads instantly, so there's no excuse for hanging around while decent folk meet their doom.
Butcher Bill has hit on the bright idea of zooming along the top of the screen dropping rocks on to the three ferris wheels below. Jolly fairground music plays as the people on the wheels get hit by falling rocks and plunge earthwards.
You must rush to and fro along the bottom of the screen dodging the rocks and trying to catch the holidaymakers before they hit the ground.
Once you've rescued - or failed to rescue - all the people, a pistol appears on the ground and a small hourglass materialises in the sky. Now it's your turn to blast away at Butcher Bill for bonus points before you saunter along to the next sideshow.
In the next screen Ruthless Rick clambers up the roller-coaster and plants bombs. Once again you must catch the unfortunates who are thrown to almost certain death by this anti-social behaviour.
Butcher Bill joins in the fun at this stage, dropping his rocks on you whenever he gets the chance. As in the first screen, you get the chance to hit back at him when there is no-one left to catch.
Carnival Massacre is a simple game with pleasant but repetitive music. It's not quite all the fun of the fair, but it's good for a few turns.