Kotaku source. Sweetening the legitimacy of this bizarre reality, the source also snapped a photo of the packaging (pictured). The cards will allegedly go on sale starting May 15.
Valve has yet to respond to our query on the subject. Gamestop tells us: "As a rule, the company does not comment on rumor and speculation."
Although this may all seem counter-intuitive (and it is when you think about Gamestop's Impulse digital distribution system), it's more like an agreement between frenemies. Valve can make money off people who don't use credit cards or other digital purchasing options, while Gamestop keeps making crazy amounts of cash off digital products in stores.