It has been quite wild for a long time. Did you think people still played this for so long just for the vanilla gameplay?
Just look for Jecrel's mods for a lot of neat content to fuck up your game and that's just the starters.
The VtM in particular is pretty great. Everyone has a blood bar in their Needs, including animals. Robots get Coolant instead which acts the same. The rules are essentially the tabletop, everyone has 7 points, they regenerate a single one daily, this affects Blood Circulation in the Vanilla game, vampires naturally lose a point every day.
This works wonders in Rimworld because every power you use is an extra point you're gonna have to feed today from someone else so you better have spares. On the upside, some discipline powers are amazing and after every fight you don't have corpses, you have a buffet.
There's also another for the Werewolves which is fucking broken as fuck since Werewolves are some really OP shit that will fuck you up. Hope you don't get a Mestis or whatever that fucked up race is.
There's also Star Wars heavily inspired in the Jedi Academy with most of those powers and lightsabers as well.
You have Call of Cthullu to create cults and worship Elder Gods, make (human) sacrifices, kill non-believers and protect your colony with fish people.
Then you also have plenty of other games with content there. There's Warhammer both medieval and 40K, there's LotR, there's even SS13.
Try these with mods that change the world into a sort of 4X, centered around exploring and conquering new lands with dynamic factions that do the same.
Oh and there's also Saferimworld which is just the SFW version of Rimjobworld so it can be in the Steam worshop.
It's essentially the same thing but replaces sex with hand-holding
and related euphemisms.