Update: Nintendo has announced that Super Mario Run has now hit 50 million downloads in total.
Nintendo of Japan has announced that Super Mario Run has surpassed 40 million downloads within just four days (Japanese translated via Gematsu). Super Mario Run was launched on iOS in 150 countries worldwide. It is currently the top-ranking free game on the App Store in 140 countries, and is in the top 10 highest-grossing games in 100 countries.
In contrast, it took Pokemon Go two weeks to hit 30 million downloads, but that game survives on a free-to-play business model, while Super Mario Run is a paid download after the first few levels. With the conversion rate of 4 percent estimated by mobile research firm App Annie, Super Mario Run has reached 1.6 million paid users already.
Nintendo updated Super Mario Run today with the all-new Friendly Run mode. Friendly Run is a lot like Toad Rally, allowing you to race other players for Coins and Toads, but it does not require Rally Tickets and you won't lose any Toads in your kingdom. There are limitations on Toad Rally though: If you've just started, you can only race one Friendly Run a day. Clear World 1 and you can do three races a day. Finish off World 2 and you can do five.
Nintendo updated the game earlier in the week with three ornaments for your Kingdom: a Sparkly Christmas Tree, the Sparkly Snow Globe and a Poinsettia. The items each cost various coins and can be used to decorate your tiny digital Kingdom.