In continuing with its theme of strategic benevolence, Valve will today release the anticipated isometric action shooter, Alien Swarm, through the company’s Steam digital distribution service for the grand total of nothing.

That’s right: Today, from Steam, you’ll be able to download what looks to be an authentically excellent action romp absolutely for free.

Oh, that’s not enough for you? Well, what if Valve throws in the complete code base and SDK (Software Development Kit) for Alien Swarm as well, so would-be videogame programmers and creators can learn how the developers of Alien Swarm went about making the title.

Surely you’d be willing to pay ‘Free’ for that package!

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