The creators of the awesome but hard, Ketsui:Death Label, are bringing another vertical shooter onto the handheld via Nintendo's DSiWare service.
Arika are releasing, "Aa Mujou Setsuna", a 500 DSi Point vertical scrolling shooter with 3D background visuals. The game includes two gameplay modes: Pattern Mode, where the enemies always appear in the same location, and Random Mode, where enemy positions change each time you play. The game includes Wi-Fi connection for a high score ranking mode, and support for uploading and downloading replays of the top 10 scorers.
Aa Mujou Setsuna Official Site