The week in audio: The Birthday Cake Game

To be fair, the Radio 4 6.30pm "funny" slot has long been a tricky one to conquer, and several excellent comedians and writers have wilted in its glare. But its most successful panel shows are far smarter than this: Just A Minute, I'm Sorry I Haven't A Clue and The Unbelievable Truth all require wit and ingenuity, for panellists to dazzle with the swiftness of their brains. There's not much room for biting repartee when all they have to play with is a celebrity's age or whether they actually know who's being discussed. The Birthday Cake Game seems like a daft, Ken Bruce-style feature given 20 minutes too long.