Fallout 4 wasn’t the only Fallout announcement by Bethesda today, as the company announced Fallout Shelter, a strategy mobile game were you control a vault and its occupants.

In Fallout Shelter, you take on the role of the overseer, and your mission is to keep all its occupants happy, send occupants out into the wilderness, name newborn babies, and defend against attack.

Now just how free is Fallout Shelter? Is there micro payments, do you have to spend money to build stuff faster? The answer is no. Fallout Shelter is 100% with no internet connection required or cool down timers. Although, if you want to, you can buy a lunch box that contains random loot.