They're putting out a hardcore first person shooter in the Mario world with hyperrealistically ugly characters and showers of blood and gore. Bowser's going to be this huge endboss you have to kill by climbing onto his enormous thrashing self and spearing him repeatedly in the eyes until you pierce his brain and defeat him.
Also, the Tanuki suit looks old, matted and sticky, as if it was ejaculated on many, many times.
And it won't let you fly.