Bethesda’s hit mobile game, Fallout Shelter, will finally arrive on Android next month with new content. The free-to-play vault builder, which was designed to promote Fallout 4’s upcoming release on consoles, is so good it made $5.1 million in just two weeks on iOS.

Fallout Shelter makes you the overseer of a subterranean colony from Vault-Tec. It’s your job to expand the vault and bring in more dwellers from the wasteland, and to ensure they have the skills and resources they’ll need to live — all while fending off attacks, fires, and roach infestations.

It’s an incredibly addictive game that I’ve been greatly enjoying on iOS. It’s free with in-app purchases, but you don’t need to spend a penny to progress and have a good time (although you’ll probably want to in the hope of securing a rare dweller with special skills).

Bethesda has been promising Fallout Shelter’s release on Android since the title made its debut, and now it has provided a release date of August 13. That gives you plenty of time to enjoy the game before you switch over to Fallout 4 on November 10.

Very excited for Android users to begin playing #FalloutShelter on August 13th. pic.twitter.com/FYXvyIzaAj

— BethesdaGameStudios (@BethesdaStudios) July 24, 2015

What’s more, Android users will see the addition of Deathclaw, the mutant monster that roams the wasteland; Mr. Handy, the multi-tooled robot; and Molerats — all of which will also be coming to iOS next month.

• SourceBethesda