While NIS America is plugging away at Cave Story 3D, their parent company in Japan is developing Bikkuriman Kanjyuku Haoh, a game based on those stickers you get with Lotte’s chocolate wafers. The Nintendo 3DS game is a tabletop style game where you combine kanji on the stickers to make words.
See the stickers for Etna and Laharl? Etna’s kanji is "demon" and Laharl is fittingly "king." Pair these two stickers together and you get "demon king" which has its own attack. Finding the right combination of kanji is the key to playing Bikkuriman Kanjyuku Haoh.
Characters pop out of the screen when you do flashy special attacks. In addition to Bikkuriman characters, a bunch of Disgaea characters are in the game too. Prinny, Flonne, and even Disgaea 4 star Valbatoze are confirmed for the Nintendo 3DS title. You can see more Disgaea 4 characters done in the Bikkuriman art style here.
Bikkuriman Kanjyuku Haoh is slated for a summer release in Japan. A North American release has not been announced and given the kanji combining gameplay system I’d say it’s unlikely.