It came from Something Awful

Sort of a fake lo-res graphics Infocom-type adventure, with Satan as the hero.

I started to get bored on page 5, but then...

>use hellbat wings & aborted fetus

You combine the hellbat wings and the aborted fetus. The fetus flaps in front of you, gurgling in a strange voice, "Killlll... mee..."

I'll probably get bored again soon, but for now...

ETA: the baby bunny fight made me not exactly lol, but I did chortle wickedly.