Got a Vita. What games do I need?

[Emerald Rocker]

1. Hyperdimension Neptunia: Re;Birth
Great game (hopefully you never played the terrible original version).

2. Hatsune Miku: Project Diva f
...if you don't plan to get it on PS3.

The rest of my recommendations are either already named, or they're imports.

[Nando]

The rest of my recommendations are either already named, or they're imports.

I'm down with imports!