At its E3 2015 conference, Bethesda announced and released Fallout Shelter, a strategy game for iOS devices. Based on the Fallout series, players build their own Vault and protect their Dwellers from the dangers of the Wasteland.

Soon after Fallout Shelter was released for iOS, it quickly became the most-downloaded game on the App Store in 48 different countries. According to IGN, the game reportedly made $5 million in its first two weeks. Game director Todd Howard said, "It just shows that gamers appreciate more depth and being treated fairly. It also shows that people love Fallout as much as we do."

It's also worth noting that Fallout Shelter surpassed 70 million daily play sessions during the game's launch week.

Earlier today at QuakeCon, Howard revealed that Fallout Shelter will be available for free on Google Play starting August 13th.

Fallout Shelter for iOS and Android will receive new game updates, including Mr. Handy, who is a new premium reward. Players will have Mr. Handy collect resources inside their Vault, and send him to collect loot in the wasteland. The game will also get new enemies, including the Deathclaw, who will try to attack players vaults.

Howard said, "We are going to support Fallout Shelter for a long time. This is something we did on the side, and we were blown away by the response."

Bethesda also showed off a new demo of Fallout 4 at its QuakeCon conference, and it highlighted a bunch of the new features coming to the game. The demo reveals new companions, romance options, locations, and Fallout Shelter news.

Fallout 4 will be available on November 10 for Xbox One, PlayStation 4, and PC.

Bethesda Game Studios posted on Twitter, "Very excited for Android users to begin playing #FalloutShelter on August 13th."

You can download Fallout Shelter from the App Store here.