How long are each round

15min.

Its actually run in 20 minute blocks. 5 min at the beginning of the block to go over rules for the first time and putting on vests, then 10 mins for the actual game, then 5 mins at the end for taking off vests and a quick break.

I can only last 2 minutes

Yep, 15 minutes. It goes pretty fast but it's fun. And in between rounds you can play 4 person Pac-Man!