Thanks for the feedback!
FrankFly: Shucks, I figured some people might still be using 1024x768... I've squeezed out 32 pixels to make a "squished" version for smaller displays - smaller than 768 it cannot go, due to the dimensions of the cards. There's now a fullscreen mode too. I'll make some more additions and then release an updated version.
I haven't decided on details, but rewards are typically granted for progress only, no?
Maybe there could be a standard after-the-fact picture of the player character that is shown whenever you lose, and more art of your opponents as you defeat them one by one.
Pampered Countess: Thank you! Addiction is the best compliment
. I still need to think about the story, and ideas are welcome. I have a rough image of the characters - Marika is a bit of a "bad girl" type, Ingrid is the "rich girl", and Tiina is a smart, bookish girl. Of course, the story mode isn't limited to just them.
Details on who spanks who will of course depend on how the story turns out, but yeah, it'll be something like you describe. A game mistress is a nice idea. I just might make use of it.