all the games before honey select or SBPR are pretty old, inclued artificial academy 1,2 and others.
by old, i mean limited customization and bad graphism.
i not talk about the story, because story is always shit
only illusion games i will recommend are honey select (for the customization and shit tons of girls) and SBPR (for the fun of it with minigame and sex and customizations)
all others games are not interresting to be honest. i played almost all the illusion games, from artificial academy to honey select, to this playhome, Hako box, all the SB serie, battle raper, a-ga, biko, des blood etc etc..