Fallout 4
Fallout Shelter is a new free game.Twitter

What if Bethesda's Fallout 4 is months away from rolling out, it has treated its fans to something that has them hooked, Fallout Shelter.

Reports have stated that this free-to-play game has pushed out some of the well-entrenched games like Candy Crush Saga. It was also said that it was the only "non-premium game" on the iOS.

The game's release was a boon for iOS devices, but sadly left out Android device players, which left many fans disappointed. However, the company has promised users that it will be bringing out this game for Android too.

Bethesda tweeted, "Yes, we're also working on Fallout Shelter for Android. Hopefully out in a few months."

Fallout Shelter has generated enough interest and enthusiasm among new and old Fallout fans. "We're very pleased. Fallout Shelter is doing amazingly well, with no real buildup. To take such a light approach to monetization compared to other free-to-play games—We felt like we wanted to err on the side of caution and make it very unobtrusive, make sure it was fun first and foremost. So far so good," said Pete Hines, VP of PR and marketing at Bethesda.

Fallout Shelter game is simple, it allows players to be the overseer of the Vault. Players will have to look after the Dwellers, see that they have jobs assigned and must be happy. Players must also defend the Vault from Raiders. It was revealed at the E3 2015.

Fallout 4 will be coming on 10 November, 2015 for PC, Xbox One and PlayStation 4.