What is a good indoor sport that doesn't need too much space?

[gboynextdoor]

yes, aside from table tennis, i'd like to know of good indoor sports that doesn't need much real estate, because i'm going to put it on top of my house and my lot is not really that big for a basket ball court or a volleyball court. preferably a sport that you can run or need to run or dash. and please no contact sport, it hurts.