Bethesda has released a new update for its free-to-play mobile Fallout game, Fallout Shelter. It introduces a new game mode and other content, such as a free Fallout 4 character for those playing on iOS.

As briefly shown in the trailer above, the 1.2 update adds Survival mode. This isn't explained in-depth, but it sounds like a higher difficulty setting. "Faced all the challenges the 'normal' Vault simulation can provide?" Bethesda's description reads. "Introducing Survival Mode! More danger, More glory. Make Vault-Tec proud!"

Also in the patch, you can now loot defeated enemies, skip the tutorial, and encounter the Mysterious Stranger. Rather than blast your enemies while looking stylish, as in the standard Fallout games, here you're rewarded with caps for spotting him in your Vault. There's also a new statistics page in the Vault Dweller's Survival Guide.

Those playing the iOS version of the game can take advantage of an exclusive offer that gets them a free character from Fallout 4 (Piper, who makes her debut in the trailer) and five free lunchboxes. The game's first Fallout 4 character was added in June.

Finally, there's now support for cloud saves, letting you manage your Vault from multiple devices.

Fallout Shelter debuted back in June as a free game; it was originally released on iOS but came later to Android. Fallout 4, meanwhile, is due out on November 10.