Oct. 23 is Fallout Day, which canonically in the game’s universe is when The Great War began and ended shortly after in a blaze of nuclear attacks. It’s a bit of a weird thing to celebrate, but retailers are using the date as an excuse to drastically cut prices on the popular post-nuclear roleplaying franchise for PC. Who are we to argue?

The best deals are currently available through Oct. 29 at Fanatical, where you can pick up Steam keys for The Fallout Classic Collection, Fallout 76 Skyline Valley Deluxe Edition, Fallout 4: Game of the Year Edition, and Fallout 3: Game of the Year Edition together for just under $40. While the Fallout: New Vegas Ultimate Edition is unfortunately not included as part of this sale at Fanatical, you can fill this particular gap in your collection for just $7.99 from either Steam or Epic. If you’re on Xbox, you can already get access to most of these games through Game Pass.

In case you’ve already played the base games, we suggest giving the Prime Video series a try. It’s faithfully gritty with great pacing as it follows multiple storylines that eventually tee up a season 2 that sounds very exciting (spoiler warning if you click that link). Also, the massive fan-made Fallout: London mod for Fallout 4 has proven to be popular, having recently celebrated attracting one million players.