Well Oz...nothing says a good game of pass the slut requires anyone to be a couple...infact it doesnt even require an equal proportion of doms and subs, though it does require at least one slut...winks.

Another good game is the suck-a-thon, (also called the blowjob race)which can be a combination of a speed race giving points to the submissives to suck off the doms the fastest and points for the dominants who can last the longest (of course to avoid a sub taking it easy on her own dom one would have to be sucked off by their rivals submissive).