The watery puzzle game will be revealed at PAX next week.
Nintendo's official website has been updated with a game page for Fluidity, a "water action" title for WiiWare.
The description says the game combines a realistic water physics engine with puzzle gameplay. Liquid water, ice, and clouds will be used for solving puzzles within chapters of an illustrated magical book, called Aquaticus. Further in the game, power-ups and enemies appear, adding complexity to the game mechanics. No screenshots, pricing, or a release date have been made available so far.
The game will debut next week during PAX at Nintendo's booth.
