I don't think I will get many replies, but it's worth a try:
If you desperately want a Metroidvania in 3D, but done well, get Dark Souls.
I kid you not. The game got everything you want from a Metroidvania.
-Nonlinear exploration (punishment for venturing too far too early included, but good players can finish anyway)
-Loads of paths and shortcuts to unlock
-Truckloads of equipment and spells
-Great difficulty (though not unfair, as some claim)
-Great designs for environments, equipment and monsters
-Soundtrack is an orchestral orgy or calm and menacing, it covers the whole program
I can't believe how this game is absorbing me.
Here is music
Though even if you're not big on CV but want a challenging game that practically devours your freetime, get this.
Holy [parasitic bomb] I love it.