Fallout Shelter was the No. 4 most downloaded iOS game in June

Bethesda dropped a bomb during its Electronic Entertainment Expo tradeshow event when it announced its first major free-to-play game, and it looks like plenty of people took refuge in the the publisher’s Fallout Shelter.

After making its mid-month debut at E3, Fallout Shelter finished June as one of the top downloaded games for iOS, according to mobile-industry tracking firm App Annie. That’s a huge launch for a console- and PC-focused franchise, and it led to the game generating $5.1 million through its first two weeks on the Apple App Store. This has Bethesda and Fallout Shelter leading the way as an example of how traditional publishers can use their major properties to take home some of the $30 billion mobile-gaming business.