Mario Kart Tour Artwork
Image: Nintendo

Mario Kart Tour got off to a bit of a bumpy start yesterday – with the game's servers collapsing under the pressure of launch demand. Despite the delayed start to the race, this mobile title still managed to perform quite well on its first day.

According to mobile market analyst Sensor Tower (via Venture Beat), Nintendo's smartphone version of Mario Kart is already the top free iPhone app across 58 markets. This includes Japan and the United States. In terms of iPhone app revenue, the free-to-play racer sits in 19th position on the US charts.

In contrast, Nintendo's previous mobile release – Dr. Mario World – was ranked No. 503 for iPhone app revenue on its debut. Fire Emblem Heroes is still Nintendo's best in terms of day-one iPhone app revenue – placing 17th when it was released in February 2017.

Did you download Mario Kart Tour on release day? Leave a comment below.