For about the last 8 years or so we have been doing a $1 per second squares game for superbowl, national championship, etc.
Same 10 x 10 layout with randomly assigned team axes and digits as a traditional squares game, but squares cost $36 each and the pool is distributed as $1 per game clock second to the person on the current score square.
So 0-0 starts off 'on the clock' and gets $1 per game clock second until the first score.
We have also run it as $72 per square where the 'winning' score is counted both ways. 0-7 and 7-0 would be 'on the clock' at the same time. 0-0, 1-1, etc would get paid $2 per game clock second in the event that the game score was on one of those ten combinations.
I like it more than the traditional squares game. It tends to have more, albeit smaller, winners which encourages repeat participation.
It also provides for some epic 'bad beats' like when you have 0-0 and then there is a safety 12 seconds into the game.
Yeah, Payton Manning, I'm looking right at you, motherfucker!