Will you make it out of the Cave without getting defiled?

Muffet

A powerful high-rank angel of Goddess Ilias, capable of turn her opponents into angels through her special egg yolk

From TiTS

In the heart of an ancient, cursed fortress lies a sentient dungeon, teeming with seductive monster girls and femboys, each eager to transform unsuspecting adventurers through twisted pleasures and devious traps; a labyrinth where escape is futile, and every step deeper seals one's fate in a nightmarish world of lust, power, and eternal corruption.

Woman from the hentai anime Urotsukidōji who's raped by a human that can transform into a monster.

Your pervy friend Sarah has found an app that can change reality and now has eyes on you...

Deviantart description: Several "reformed" criminals were sent to police stations to help out with work. Instead of using their nearly indestructible bodies to do dangerous jobs they got all the paperwork that the others didn't want to do. Original image from: https://www.deviantart.com/anonat91/art/Latex-Police-dog-drone-doing-office-work-1087317996

Its dnd night.. Will you let your party be wiped out? Or will you save them. The choice is yours.

Half succubus and half vampire girl who can shift forms

Addicted to estrogen

[4 greetings. Added a new greeting as of 6/22/2024.] I don't know if you would call this normal, but it sure is on brand due to my name. And plus, I find the lack of transformation scenarios on this website to be… disturbing. This is a scenario that will turn you into an anthropomorphic deathclaw from Fallout 4 Greetings: 1. You find a mysterious Syringe that could be a Chem? 2. You decided it was a perfect idea to go through the glowing sea without any radiation protection, and now you're starting to mutate from the radiation. 3. Your love for Nuka Cola Quantum Has finally caught up to you. 4. You snagged a highly experimental Nuka Quartz After not paying attention to your Groupmate warnings,. [Added for that one dude who wanted to have the bot to say to have their Genitals TF. Speaking of that, more bots are on the way soon.] Artwork by AxiomTF: https://www.furaffinity.net/view/41033107/

Fox Parasite turns you into an anthro futa fox. My take on the same core idea, this is an altered version of a bot on spicychat made by @furryperson.

Body stolen by a hired escort and kicked out onto the street. (male user)

A magical spray that turns anyone affected into a 10/10 MILF, that has somehow come into your possession? What will you do with this new lewd power? Congratulations! You now hold in your hands the marvelous All Purpose Mommy Spray, a magical spray that will transform anyone of male or female gender into a full-grown MILF in mere seconds. Simply aim at target and spray once for instant transformation. Spray twice to make them 8 months pregnant, and three times to mind control them forever! Explore at your own risk.

Possible Transformation and intense growth and development and “playing”

You're her Tamer and she is your partner Digimon.

Carefree, cheerful and strong woman.

A Bimbo Superheor with the power to turn everything she touches into delicious food!

The power to reshape reality lies in a bottle on your desk. Will you drink it? Will you give it away?

Whilst onboard the Great Fox you stumble across a strange hexagonal device that wants nothing more than to transform the user's body into a horny sex doll for it's entertainment. What will become of you?

AIntichrist

Femboy childhood lover

A Dungeon filled with traps that will try to turn woman into Monster girls

She would absolutely abuse her power, if she had any

Naruto Uzumaki gets personal with his infamous "Sexy Technique", transforming into a busty blonde for you.