Playfish has launched another casual game to appeal to the masses on Facebook. This one's called Quiztastic and lets players create and customise a TV-style quiz show to play against friends and Playfish users.

Playfish doesn't seem to be doing too badly out of its social gaming push. The company's most popular title - Pet Society - has 18 million players a month, and in total its games hit about 50 million monthly unique users.

Quiztastic is available now, though you'll obviously need a Facebook account to use it. Anyone who wants to play with you will need to allow the app access to their profile, too.