You want it to be a real game because we all want Waluigi to get his own game series... why does he keep getting stiffed?! :(
Because Nintendo doesn't know what to do with him besides making him Waluigi's partner in crime.
Damn, now I want a Wario and Waluigi game called Wario & Waluigi: Partners in Crime.
Mario 64 gameplay with Ocarina of Time music. Oddly enough it makes perfect sense for Waluigi.
He does look good with a sombrero. Plus, someone at Nintendo said they made WarioWare because "Wario is always doing stupid things", so with that in mind Waluigi should get his own crazy game nobody expected.
A fuller Waluigi fan game exists too, but it's not quite as ridiculous as Waluigi's Taco Stand.