Yeah, I ended up reviewing Megadimension Neptunia VII. Isn't that the fourth game?
Hyperdimension Neptunia, Mk2, Victory and then that?
I dunno ¯\_(ツ)_/¯
re: Rift I've heard good things about that and the Vive headset. Seems like Vive is slightly better, but both are pretty comparable.