The Fallout series is 25 years old now and while Bethesda have been the stewards for the past 14 years, with the release of Fallout 3, but the series started long before then.

With the series celebrating 25 years this October, Bethesda are celebrating across the month, including offering up a free week of Fallout 76 for all players, no Game Pass required.

In addition to that, Fallout Shelter, the mobile game that launched back at E3 2015 and has since been released onto all other platforms, will finally get some new content, the first in over four years. This new update will bring in an alien threat for Vault Overseers to deal with, complete with new weapons, dwellers and items to decorate your vault with. More specifics are still to come when the update launches next week.

There is something happening most weeks this month, so here is the schedule of events happening:

October 4

• Fallout 76 Free Play Week runs from October 4 – 11

• Fallout 25th Franchise Anniversary Sale begins

• Faction Quiz – Find out where you belong in the Wasteland

October 10

• Celebrate the game that started it all in 1997. Fallout 1 turns 25!

• Fallout 25th Social Shorts Retrospectives celebrating 25 years of Fallout

• Fallout 25th Spotify Playlist

October 11

• Fallout Shelter celebrates the 25th Anniversary with new content including quests, dwellers, and more.

October 18

• Vault-Tec have created a Fallout inspired controller for Design Lab

October 25

• Spooky Scorched returns to Appalachia until November 8.

The full details about what you can expect, can be found on the games official celebration site, including this special Xbox Series dynamic theme.