In June, Nintendo announced a new game was in the works for Wii U called Project Treasure to be published by Namco. Today, the game was revealed as Lost Reavers.
The co-op action title title developed using Unreal Engine 4 is dungeon crawler containing various puzzles.
You can head over to the official website for more information. It's in Japanese, so be sure to use your browser's translation option if needed.
A release date wasn't provided.