Sensor Tower: Mario Kart Tour’s first day laps Dr. Mario World’s

Mario Kart Tour is having a strong first day, according to mobile market analyst Sensor Tower. Nintendo’s newest mobile game is the No. 1 free iPhone app in 58 markets, including the U.S. and Japan.

In the U.S., the free-to-play racing game is ranked No. 19 for iPhone app revenue. That is a much better first day performance than the last Nintendo mobile effort, the puzzle game Dr. Mario World, which was No. 503 in its debut.