Any specific graph-connectedness or population requirements for the participants?

(Also, if it isn't dedicated to Dionysus, it isn't an orgy, it's just sparkling group sex.)

@Stralor 's ruling is

It's 5+ for an orgy, with multiple people engaging with multiple people, in the same space. Contrast to:

• a threesome, where there are only 3 (duh)

• a train, where there's one person who has many other partners in sequence

• a gangbang, where there's one person who has many other partners at once

• a (full-)swap, where two or more couples have sex with a partner from another couple, aka swinging