Killing Floor and Red Orchestra developer TripWire Interactive has launched its own online store where you can buy fun-looking merchandise from some of the studio's big titles. There's not a great deal of range to pick from right now, but those Killing Floor t-shirts look fine.
Right now, Tripwire is throwing in a special-edition t-shirt starring Pukey the Clown from the Killing Floor Summer Sideshow event, when you spend $40 or more. As if clowns weren't freaky enough, here's a giant one that vomits on you. Great. There's also a Horzine Biotech coffee mug which you can bring to work to confuse your co-workers, just like you did with your Aperture Science mug.
Tripwire has recently published other indie titles, like The Ball, Dwarfs and Zeno Clash. I think I speak for every right-minded person when I say that I would love to see some crazy Zeno Clash t-shirts!