It will be really awesome if we can play strip poker in XStoryPlayer!
Even if it's only part of XStoryPlayer V9.0 (X Moon University); in fact, it will actually be perfect for X Moon University!!
You must be able to ask any girl (5 max) if she wants to play strip poker (preferably Texas Hold'em).
The girls should be capable of undressing themselves and each other so that it's possible that they can choose to be undressed by the winner (whether it's you or another girl).
When someone is completely nude and still wants to play to win their clothes back, they'll have to risk doing something sexual (solo or with other nude participants or with the winner) if they lose.
Eventually when everyone is completely nude (except for the winner obviously) they can have an orgy!!
The poker table's layout must also (if possible) look something like the one in Telltale's Poker Night at the Inventory:
http://steamcommunity.com/app/31280/screenshots/
http://steamcommunity.com/app/234710/screenshots/
Here are a few sites with strip poker guides & tips (the last one is more suitable for XStoryPlayer):
http://www.pokerstrategy.com/strategy/live-poker/748/1/
http://sexuality.doctissimo.com/pleasure-desire/erotic-fantasies/our-guide-to-strip-poker.html
http://www.neverwinpoker.com/strip-poker
http://ezinearticles.com/?Strip-Poker-Rules---An-Erotic-Foreplay-Game-For-Couples&id=1502480