[Update: This deal has ended.]

We have a PSA for Civilization fans: If you've been waiting for the price to drop on Civilization VI's newest expansion, Gathering Storm, today's the day to grab it. While the Gathering Storm expansion, which released in February, is still selling for $40 on Steam and elsewhere, it's currently on sale for $26 at Fanatical--and we have an exclusive promo code that slashes the price even more. This promo code is only available for new customers to Fanatical.

If you use promo code GAMESPOTCIV6GS at Fanatical, you can get an officially licensed Steam key for Civilization VI: Gathering Storm for only $20, by far its lowest price yet. As a comparison, the first Civ VI expansion, Rise and Fall, still sells for $30 and is discounted to $19.49 at Steam right now--and it released over a year ago. So this is a good chance to grab Gathering Storm for cheap, as it likely won't drop lower than $20 anywhere for quite a while.

GET CIVILIZATION VI: GATHERING STORM FOR $20 »

The deal is available now through May 16 at 9 AM PT / 12 PM ET / 4 PM GMT. To claim the 50% off deal, head to Fanatical and add the Gathering Storm expansion to your cart. In checkout, click "Redeem a coupon code" and paste in GAMESPOTCIV6GS. You'll see the price drop to $20, and you'll receive your purchased Steam key immediately. Please note this is Aspyr's version of Gathering Storm for Steam, so you must have a free Steam account to redeem the key.

The Gathering Storm DLC adds eight new civilizations and nine new leaders, along with new world wonders, units, districts, buildings, and improvements. As the name implies, Gathering Storm adds environmental hazards, like volcanic eruptions, blizzards, sandstorms, hurricanes, floods, droughts, and climate change, to wreak havoc on your civilization. Luckily, there are ways to counter nature's fury, such as building dams to ward off flooding and developing cleaner energy sources. Gathering Storm also introduces the World Congress (through which you can earn a Diplomatic Victory), new late-game technology and civics, and new scenarios like The Black Death and War Machine (WWII).

If, for some reason, you're reading this article but haven't yet purchased Civilization VI, it's worth noting you can currently grab the base game for $15 on Fanatical (about 75% off). Civ VI is already on sale for $16.79, and using sitewide promo code MAY10, you can slash another 10% off the price, dropping it to $15.

GET CIVILIZATION VI FOR $15 »

That promo code also applies to hundreds of other PC games discounted across Fanatical right now--be sure to check out the huge May Madness sale running all week long.