The figure comes via Sensor Tower, which previously said Mario Kart Tour hit 20 million downloads on its launch day, and would make it comfortably Nintendo’s most successful mobile title in terms of week one installs.
Nintendo’s second-best mobile launch was Animal Crossing: Pocket Camp with 14.3 million downloads in its first week, ahead of Super Mario Run which racked up just shy of 13 million downloads.
Android downloads accounted for 59.5% of Mario Kart Tour’s first week total, according to the data. The game was most popular in the US, which accounted for 14.7% of downloads, ahead of Brazil (11.8%) and Mexico (6.4%).
In terms of first week player spending, the free-to-play racing game is claimed to have generated $12.7 million, behind premium title Super Mario Run’s $16.1 million and free-to-play Fire Emblem Heroes’ $28.2 million.
iOS users accounted for 75.5% of total player spending. Players in the US generated 45.4% of the total, ahead of Japan (31.3%) and France (6.4%).
Mario Kart Tour microtransaction mechanics include a gacha-like system for unlocking content, as well as a Gold Pass $4.99/£4.99 monthly subscription service that lets players unlock more in-game rewards. The Gold Pass is available for a two-week free trial period before users are charged.
Nintendo is expected to introduce online Mario Kart Tour multiplayer in a future update.
Call of Duty: Mobile, which officially launched on Tuesday, is estimated to have been installed over 20 million times.