If you’ve been waiting for an excuse to buy Duke Nukem 3D again, digital download service GOG is giving you ample reason to get a move on. The first-person shooter classic and three other Duke Nukem titles are being offered for $ 2.36—90% off the normal price—from now until the end of 2015 (10:59am GMT on December 31, to be precise). The original Duke Nukem 3D is available individually for $ 1.49 if the extra buck means more to you than the somewhat forgettable ancillary Duke titles.

If the low price isn’t enough reason to make a move, know too that all the Duke Nukem titles will be leaving GOG’s storefront when 2015 ticks over into 2016. After December 31, GOG says that the games “will be removed from our catalog, but we are in talks with the new rightsholders to bring them back as swiftly as possible.”

Those who purchase the games before their removal from the store will still be able to download and view them in their GOG account into 2016 and beyond. The Duke Nukem series is also currently available on Steam, where it has also been discounted during the Steam Winter Sale.