Advance Wars: Days of Ruins Music Player

[mochico88]

So far that's the only DS game that I know that keeps doing something when closed. New Super Mario Bros. and SM64 DS both do the "Goodbye" thing when you close it, but they're still on sleep mode when closed, while AW:DoR stays running, until you unplug the headphones. So there are other DS games that keep doing something when closed? I tried doing the same with music players from Fire Emblem (being that it's also from Intelligent Systems) and from Castlevania: Order of Ecclesia, but they go to sleep mode anyway. Does anyone have AW: Dual Strike to test this out?