The 4th installment of id Software’s other wildly popular first-person shooter franchise has been available in stores for a couple weeks now. It arrived without nearly as much fanfare as Doom 3, and received fairly lukewarm reviews. Are people starting to cool off on id Software? Could it be that people want something more than just twitch action and pretty graphics? Either way, if you want to take Quake 4 for a test drive, the official PC demo has been released online. It features both a single-player mission and a multiplayer map, and the download is approximately 324 MB in size. For more info, check out the official Quake 4 website.