i've done this for select EA Sports games for over a decade when i found out they had an office in my city. the entire perimeter of the facility is setup with multiplayer gaming in mind with the center zone and individual work stations between game stations to work on issues as they arise while developing the games.
there is also a Blizzard office not too far away on the opposite side of the city as well that is set up in the same manner but in a warehouse. i found both of these places in 2 days while doing some contract work for one of their suppliers and have enjoyed what little time i get to experiment on. i can say i have found more than a few cheats/exploits in features of the games that had to be fixed or sadly eliminated from some games if they couldn't be fixed in 3 days or less. two of the engineers still working there groan when they find me there playing.
sorry Ben, sorry Paul, it's all Kens fault, he made me do it!