It would never keep kids' attentions nowadays
I wholeheartedly disagree. Double Dare is a near perfect balance of questions and stunts, IMO, and what self respecting 9 year old wouldn't want to catch pies in a pair of clown pants?
Air some new episodes of 2-on-2 Double Dare and Legends of the Hidden Temple- my bet is that they would blow Brainsurge (which has its flaws, albeit few) out of the water.
I think kids like cartoons. The game shows on Nick were a means to an end. They were cheap to produce and made enough for the network so they could afford to branch out into cartoon production, which are pretty much timeless.
So you're telling me that game shows, which have historically done well as a whole on the network (I heard somewhere that Family Double Dare was greenlit for 93-94), are cheap to produce and generally make money? Sounds good to me.