First person shooters and tower defense games are surely two of the most addictive genres out there, so when you combine them into one polished indie game it's bound to be worth your time—especially when it only costs around $3.

In celebration of Sanctum's localization into a slew of new languages, Swedish devs Coffee Stain Studios has put the FPS/Defense hybrid on sale for 66% off. Head over to Steam today—and only today—to grab it for $3.39, or $7.47 with every piece of additional DLC.

Coffee Stain reports that Sanctum sold 300,000 copies last year, more than respectable numbers for an indie title. Let us know what you think in the comments or on Twitter.