Okay, guys, this is going to sound kind of nuts but hear me out...
The Arkham series of games is an amazing series of games. Above and beyond being the best possible portrayal of Batman out there, I've examined deeply what I have begun to see as a progression of personal kink. So here we go, into the rabbit hole (**I don't THINK I left any notable spoilers but just in case, read at your own risk**):
Arkham Asylum - Seems benign enough. Couple of old guys get tied to chairs, meh. Then we run into Ivy. She's mostly naked but I notice that they go to a shocking level of detail including beautifully rendered feet. Yeah, there were barefoot thugs here and their but their extremities were blocky and cartoony as Fable feet, not like Ivy's. I was waiting for the opportunity to see if Batman even cuffed her at any given point but alas it was not to be. When first playing it, I didn't give it much more thought.
Arkham City - Suddenly the number of character possibilities has skyrocketed. Though the first bit of bondage is Bruce Wayne in a suit (for the ladies and the gentlemen of such persuasion) what really caught my notice is that the first we see of Catwoman outside the DLC is deliciously struggling all tied up upside-down. Nice to see but then no less than three other female damsels are witnessed in restraints! With Harley, you even get to ungag and regag her ad-nauseum. It was nice to see despite the frustratingly enveloping boots on all the ladies protecting their feet from attack. Upon seeing this I re-visited Arkham Asylum and realized it went from barefoot, no bondage to bondage, no bare feet. A dream entered my mind that they might just be progressing up my scale of kinks but I laughed the idea off.
Arkham Origins - Imagine my surprise when they reveal an all-but-barefoot female version of Copperhead who is not only shown restrained when Batman is going over the assassins likely to come after him but is also strictly hogtied by Batman himself. With only a thin pair of stirrups protecting her soles, she fulfills the barefoot and bound status.
Arkham Knight...?
We have one final game in the series and though I know it's so deep a pipe dream we're looking at cracking the planet's core... but with the progression so far we might get to see some tickle torture in a Batman game!
(I know. I know. Just please let me dream...)