…it should probably be BioShock. Leastways, that’s the scuttlebutt around the office. But if you buy two, may I sincerely recommend the second choice be Picross DS?
I would gush about it a bit, but I’ve already said all I have to say about it in my review… which, I have to say, is one of the better pieces I’ve written this year. It’s very simple and sincere and to the point, because I feel strongly that Picross is one of the best puzzle concepts ever — and this is a nearly-perfect rendition. (Only nearly, since zooming in is a little clumsy.) Please give it a try.