It’s become a regular, if surreal, sight on the streets of Tokyo: convoys of go-karts whizzing through traffic, driven by tourists dressed up as Super Mario and other game characters.

But the days of such antics may be numbered, after Nintendo announced it has won a court battle against one popular go-kart operator, blocking it from lending its characters’ costumes to customers.

MariCar offers what it calls “real life superhero” go-kart experiences for customers, enabling them to drive on the road while dressed in an array of game character costumes, including Super Mario, Yoshi and Princess Peach.

The company, whose main customers tend to be tourists, operates the service from around from half a dozen shop locations in Tokyo as well as Kyoto, Osaka and Okinawa in southern Japan.

Nintendo launched legal proceedings last year, with one complaint being that the go-kart company was called MariCar, while its own popular racing game “Mario Kart” is also known as MariKar.

The Kyoto-based gaming giant also argued that the company had not been given permission to dress up its drivers as Nintendo characters or use photography and video footage from the official game in its publicity materials, according to AFP.