The whole thing hinges on two dudes in cheap Scooby Doo mascot suits, and honestly the absurdity is doing more work than the animation. Velma's there, glasses askew, getting absolutely railed from both ends while the costumes just... stay on. Like full head, paws, the works. It's so stupid it loops back around to being kind of hot, the way a bad porno parody can be.
Mechanically it's one of those clickable scene things, you pick which hole gets filled or swap her out for a futa version mid-scene. The futa toggle is actually the best part, watching her suddenly sprout a cock while still getting her mouth used. The cumshots are messy and plentiful, which I respect. But the blowjob animation loops weird, her head bobs like she's nodding along to a song that keeps skipping. And the threesome positioning gets cramped, sometimes a leg clips through the couch and you just have to pretend you didn't see it.
Lingerie's there too, orange and purple, very on brand. The sound design is just wet noises and grunting, no voice acting, which is probably for the best because hearing Velma moan "jinkies" would have sent me to the hospital. The clickable elements are responsive enough, though I spent way too long trying to get the cumshot to land on her glasses specifically. It never did. Small complaint, but it stuck with me.
If you're into weird cartoon smut and don't mind the jank, this'll get you there. Just don't expect the Scooby gang to show up and rescue her. They never do.