Hotel Dusk is a fantastic adventure on the Nintendo DS. You control Kyle Hyde as you search for your missing friend.
You play at hourly intervals (in ingame time). The game is filled with puzzles, and many innovative uses for the touch screen. For example, at one point you have to do CPR on a fainted girl. Most of the puzzles were pretty hard, but not SUPER challenging. You also have to have one on one discussions with people, when you uncover their secrets. Answer wrong, and you have to start over.
The characters are memorable. From Mila, a mute girl, to the bellhop, they're all great. And it's your job to find out what they're hiding, and what they have to do with Bradley (or if they do at all). There are several endings to unlock, so if you have enough time (and patience), I urge you to unlock all of them.
Filled with unexpected plot twists and turns, I guarantee you that Hotel Dusk: Room 215 will keep your undivided attention until you finish it.