Bandai Namco Entertainment and Nintendo are working on a co-op action game exclusive to the Wii U.
Speaking in yesterday's Nintendo Direct, Tekken director Katsuhiro Harada announced a new project between Bandai Namco and Nintendo called "Project Treasure." It will be available only on the Wii U for free from the Nintendo eShop.
Harada explained, "It's an action game where four players work together to complete various stages." There will be traps, enemies, and treasure.
The game is tentatively titled "Project Treasure," and Harada said only a little about it so far. What we can see so far is only a tease (starting at 23:10 in the Nintendo Direct presentation); there are a few quick glimpses of what look like characters in the game from close-ups on the face to quick cuts of their upper bodies. Harada also said he could not announce the game's name or its launch date yet (beyond an open-ended "coming soon"). Bandai Namco Entertainment will have further updates. It will be a Wii U exclusive.
Any Nintendo Network user can play the game as long as their Wii U is connected to the internet.
So, there's not much to go on right now, but it's incredibly doubtful this is related to the Tekken series. Project Treasure sounds sort of like a dungeon crawler, and we don't know if there will be more than four characters to choose from. This sounds like an interesting mash-up of teams associated with "Project Treasure," at least.
Source: Nintendo Direct