Nightwatcher Boon/Bane (Game)
So there is a classic forum game that I've usually seen called "yes, but". Usually used in reference to wishes. Basically, the first person posts a wish, then the poster after them grants that wish but tacks on a rider to make it awful, then posts their own wish. And so on and so on.
The Boons and Banes from the Nightwatcher seem ideal for this. Since the bane doesn't necessarily have to be directly connected to the boon granted, this opens up a bit more leeway, but I think it could still be
Granted! You can choose your own bane:
A) All of your senses are now focused towards the internal rather than the external: you can see your insides, you can smell your insides, you can feel your insides, you can taste your insides, you can hear your insides: but you can't see anything outside of your body, you can't hear sounds that you didn't produce, you can't smell odours not emanating from your body, you can't feel anything on the external side of your skin. You can follow your entire