Between the two games, which have the best animations/CGs in those categories, which stages do you prefer, and which boss fights do you like the most (ignoring better mechanics for combat in the second game)?
hmmmm. For me there is a simple split in that question. The sexy stuff (pregnancy and sexual slavery) is better in 2, the horror (horror and guro) is better in 1. Which fits as the author himself said that the focus was intended that way for each game.
In the first the deaths felt more raw and brutal in many cases and the eldritch horror aspect of reaching the end only to enter the room in a haze and embrace the slug lovingly against your will felt more like typical lovecraftian horror as well as the fact that it's kinda hard to tell how much of the 1st game is even real or not. The fact that the first room and the final room are basically the same room could imply that the entire game is fake and it just happens in rabiane's head, as a means to break her will. Then again it might be real and only the final room might be an illusion. It's not clear and the unknown is a core concept for this type of horror. On the 2nd game you are getting somewhat more clear cut answers and a better ability to fight back so the horror is a bit softer. Then again seeing as how we are lore war-ing, it's ofcourse still not crystal clear, but still.
On the other hand the 2nd game ofcourse deals even more heavily with the idea of motherhood and birthing the eldritch into this world. Also, for the sexual slavery, I kinda love how the demihuman lair handles it, where you are constantly given the written choice, with "obey" plastered on it. That feels special in way opposed to the wordless version with the cultists in the first game, especially as they are shown to brainwash you on the 2nd loop. With the demihumans, sure, you are motivated to obey by the threat of death if you resist and fail, but in the end it's still you that's "willingly", even if reluctantly choses to
obey and get raped like a good little girl. That's hot in the most degenerate way possible. XD
As for stage and boss. Hmmmmmmmm.
Well, honestly for stage I kinda have to pick the Demihuman lair for the reason above. I do prefer the sexy stuff and I don't actually like guro, even if I think the presence of it really enritches this game. (Like if the goblins didn't kill you for resisting, that would make obeying less hot, just like how the cultists specifically in game one don't kill you no matter how many times you escape them)
As for boss, not sure base on what criteria I should pick, the otherworlder in game 2 is peak design as someone mentioned it earlier, seeing as how it's attacks against the barrier could be percieved as sperm cells trying to penetrate an egg, mirroring it's ultimate goal to impregnate the sisters.