A novelty game is a type of game that is unique or unusual, often created to entertain or amuse people with its original concept or features. It is something different and refreshing compared to traditional games. Full definition
It had a hell of an advertsing campaign when it was first launched, and packed in a layer of novelty gamers of the day had only seen in Nintendo Wii. (gameranx.com)
Classic campaigns like Dead Space, frantic multiplayer games like Left 4 Dead 2, and novelty games like Dead Island were all quite popular during the release of Killing Floor. (gamingunion.net)
This is a dumb, limited novelty game that's not worth the asking price (metacritic.com)