A text adventure, since all the cool kids are doing it nowadays.
"Explore the magical world of Mitiene, a city bustling with activity, most notably within people's guts. With a rich and diverse populous, it's a wonder society manages to function with half of it constantly stuck inside the other half. But that's vore for ya.
There's no real goal in right now, so just wander around and talk to people, and beg them to eat you/be eaten by you."
Willing and Unwilling Vore
Other kinky stuff!
Probably a lot of bugs