I don't have any iDevices, sadly, so I'm going to have to keep an eye out for a DS version. Be less expensive, The World Ends With You!

I'm evidently going to have to check out the Ace Attorney games as well; three people have now recommended them in these comments! Thank you very much for your advice.

(And hello to you as well! That is an excellent combination of interests you have. I should probably try to finish Metal Gear Solid at some point; I sort of abandoned it halfway through on account of being so bad at stealth that I was embarrassing myself. It's very nice to meet you!)