The funny thing I've learned lately on the subject matter is that I generally prefer complex games that hide their complexity. I don't like jumping into games that wear their complexity on their sleeves, instead I prefer jumping into a game that seems really simple only to discover halfway through I've been playing it wrong. Vagrant Story and Dark Souls are wonderful examples of games that have a lot more going under the hood than you first perceive. Other games like this are the SaGa titles, Legend of Mana, and most of Matsuno's games.