Serious Sam 3: BFE is now available on OS X, further embiggening Mac gamers' ever-growing Steam libraries. And the game's 66% off until April 30.

There's a few reasons not to pirate it—as if the giant immortal pink scorpion that will hound you if you do isn't enough.

Serious Sam: BFE is "a glorious throwback to the golden age of first-person shooters where men were men, cover was for amateurs and pulling the trigger made things go boom," reads a press release for the Mac version.

The game's been out for a while, but if you haven't played it yet (or you're a Mac gamer) you can pick it up now for only $13. Let us know what you think in the comments or on Twitter.