It's not neccesary to be a succubus game, onfly if you have a male protagonist that he improves his capabilities, in a history getting sexy girls, with beauty faces, big tits and big asses, and you can unlock diverses sex scenes (blowjob, vaginal, and anal sex, one by one with all of them) with that girls, and entertaining gameplay you have a win.I'm sure kain can do better alone and even so make his own succubus game and outbest this game by a longshot because it only requires the artist to learn RPG:MV > coding > SFX > dialogues > battle system > and last and most important a lot of interactions with the NPC's to make an good succubus game.