I just discovered that www.winvery.su supports Peercoin.
Here’s their announce Feb 8, 2014
(They also support BTC, LTC, and NVC)
I haven’t tried them at all, so do so at your own risk.
I do know they want a 10 Peercoin deposit, not sure if you can bet in uPPC or mPPC
Does any one else know of any casinos that take real tiny bets for a slot game? Spending 1 PPC per spin doesn’t sound appealing.