Anonymous Notes: Chapter 1 – From the Abyss will be on Japan’s DSiWare store on February 10. Like the physical Nintendo DS game, this game has a dungeon creation system. Actually, it’s unclear if Anonymous Notes is a stripped down version of From the Abyss or an episodic DSiWare remix.
Sonic Powered appears to be reusing the graphics from the Nintendo DS version, which they also recycled for a couple cell phone games. I suppose that’s OK since Anonymous Notes only costs 200 DSiWare Points ($2).