Sensor Tower — Fortnite: Battle Royale has already made $15 million on mobile

Epic Games’s Fortnite: Battle Royale has earned over $15 million from in-app purchases in its first month, according to market researcher Sensor Tower. The free-to-play game has been downloaded over 11 million times worldwide, and it’s now ranked No. 1 in the Apple App Store.

After an invite-only launch in mid-March, Epic opened up its shooter sensation to all iOS players on Monday. As soon as it did, Sensor Tower reports that its daily revenue tripled as compared to the previous week. Players spent $1.8 million on that day alone, whereas the game was generating an average of $620,000 per day during the invite-only beta.