Mmmm... Valkyrie Profile...

Everyone go play it! It's the only game where you have a reason behind manifesting your party for combat sequences, and then send them back to nothingness so you can be the only person walking/flying around. It's also written really, really well.

On the down side, seriously, go find a non-spoiler pointer on how to get the good ending, because it's hard to get otherwise, and it's very, very, very worth it.

-Craig