its really fun! you get the nuts and bolts and pass them out to the girls and guys - guys get the nuts and girls get the bolts - and then everyone has to try and figure out whos got the matching other half -- its really cute - theres a bar in NYC that does it as like their theme, and when the random people find each other - they go up to the bar and get a free drink! so incorporate it how ever you want, itll always be fun....
although - if u are looking for just fun games to play with guys & girls - try handcuffs & heinkens - u get zip ties and make them into little handcuffs and each couple has to drink their case of beer - its a really fun game, and its crazy to see how everyone does it and who their paired up to - i was paired up with one of my AEPi friends who was literally 6' tall .. and im only 5'2 haha ...
have fun!!!