If you haven't heard of Clang, now is the time. The brainchild of Snow Crash author Neal Stephenson, Clang is an exciting foray into accurate, fun sword-fighting combat in a video game.
His Kickstarter has been around for a little while now, but it has only three days left and hasn't quite reached the $500,000 goal. Check out Neal's original video on the donation page for a full explanation, plus a cheeky cameo from Gabe Newell.
Gabe, shouldn't you be busy withholding the Summer Sale?