Also, The Chase here in America is now casting. After the pilot from FOX was not ordered into a series, GSN has a turn. The casting call is here, and doesn't say anything specific about age but I would guess it is 18 and over. Auditions are Los Angeles on April 27th, New York and Chicago on May 4th, then Boston and Washington DC on May 11th. Good for GSN, it looks like they're putting a lot of effort into this.
I do think they will make The Chase into a hit, even close to the status of American Bible Challenge. It's just that it's not specific-subject based show, like Bible is. Still, just get the right host, and advertise it right. Not Larry the Cable Guy, please.