The game is an action/adventure hybrid like Pocky + Rocky or Rejoice: Aretha (for you Super Famicom guys). Knowing Watermelon, they do quality stuff so I'm guessing the game will be solid. I'm already planning on buying a few copies once it gets released.
-------------------------
To-do manuals: Arabian Knights, Gulliver Boy, Dark Law, Brandish 2, Flying Hero
Finished manuals: Neugier, Wonder Project J, Burning Heroes, Star Ocean, FEDA, Monstania, Chaos Seed