^stolen from JP Nintendo, but yeah. It's called "Wish Room: Angel's Memories" in Japan, and it's a fun DS game. It's similar to Phoenix Wright, except it's mostly investigation and character interaction. You can actually move around and explore/investigate the hotel (Hotel Dusk) in depth (more than Phoenix Wright). There's no "court-room phase," but you interrogate the characters to drive out their secrets in order to find out where your best friend went. There's a nifty affection system-like thing which determines the ending you get.
I got the bad ending.
There is also second-playthrough special stuff, which is nice replay factor.