Nintendo’s first proper smartphone game has proved to be a huge hit. According to the company, Super Mario Run was downloaded more than 40 million times in its first four days of availability on iOS, breaking the App Store record for number of downloads during that span. Previous reports pegged the game’s debut at around 2.85 million downloads in its first day, though these are the first official numbers to come from Nintendo.

That success was aided in part by a global launch, that saw Super Mario Run debut in 140 different countries. Nintendo doesn’t say how many players actually spent money on the game; while it’s free to download, Super Mario Run requires a one-time $9.99 fee to unlock the entire game, a relatively high price tag on mobile that has proved a sticking point for many users and investors. However, Nintendo does say that the game managed to reach the top 10 highest-grossing charts in 100 countries.