I always felt that most "enforced-fun-games" were excellent at team building. Being "asked to cross an imaginary river" etc is a great way to unite the humble employees in their universal loathing of their woefully mis-guided management. Always had a niggling feeling that the 'bad games' couldn't be that bad by accident. ("Look, everybody hates everybody - could we push some more hate towards us, so they at least talk to each other?")

Or there are the "split into small groups to do a task" tasks, which are usually won by teams where one person 'just does it', whilst the rest are bickering around how to break down the task and assign r&r. Again, not sure if this is the point, but you very rapidly notice which of your colleagues are both loud and useless.

Oh and final whine, 'the prizes' There doesn't need to be one - but if there is, could it please be something that's actually wanted? Branded merch, $100 Apple voucher, ask the CEO a question etc...

..actually, I wouldn't mind asking if his bonus is an f'in polo shirt.