First of all: Great site, I've been waiting for a looong time for a page like this.
I've got some ideas:
What about a scene where the girl is an actual playing figure? There could be setting like this: The girl - dressed like a proper playing figure (wearing a funny hat for example or getting a stamp on her forehead)- starts at the one end of the room and is supposed to reach the other end (a marked playing field would come in handy here).
The doctor/master picks up prepared playing cards with different categories, could look like this:
a) Verbal humiliation cards (there are many things, I would love to hear: Daddy-Mommytalk, degrading her own body (for example "I'm fat/ugly...""I got small titties") or getting degraded, SINGING (love scenes with singing)
b) Dehumanization cards: Becoming a piggy/doggy/kitty, limb-modification
c) Anal action cards: Well, I think you've got lots of good ideas here: Fucking, A2M, enemas...
d) Other stuff: Getting spit on, drinking piss, cum-enema, giving birth to a kitten
For every card/task the girl is allowed to move (or crawl/hop) on (there could be actual rules how many fields she is allowed to move on)
But there are joker-cards as well: If the master picks one up, the girl needs to start again or stuff.
Would love to watch some of these ideas. Keep up the very good work pleas, luv your site!