Ah yes, Honey Select, my favorite eroge "game". With so much gameplay depth such as make girl. Then, have sex with girl.
You do not move, you go through menus and you select stuff. They then released a sequel. Which was just the same.
Koikatsu, you run around an all female school. You create a harem. That's it. Peeping on the girls do nothing or affect your relationship with them. Cheating? Yeah, that's okay. It's another scene select, really. Just getting to that scene requires finding the girl. Though, you can just find her through a menu and teleport to her.
A lot of the past Illusion "games" haven't been that, a game. Ai Shoujo introduced crafting. Wow, it's an annoying grind, but doesn't really matter, doesn't take long to get into the girls pants.
Only thing going with all their latest games is the character creator. That's about it. The game is secondary.
The times I played the recent Illusion games are the times I find a shit ton of Illusion Cards, and then I fuck the waifus of whoever created that girl.
You also know Illusion's character creator is good and easy to use, is when you see a shit ton of indie porn game using those fucking models. Just, a constant stream of either Koikatsu or Honey Select character models. Like, holy shit. I've played those games for so long, I just know it by the posing and even structure of their body and faces.
Only way you can try to make it not look like those models is with proper shading and altering the bodies enough.
Go through f95 latest updates and you see another Koikatsu made VN using default ass faces with no shaders.