Recently, videos of Halo 3 alpha stage gameplay were leaked onto the internet. The video, which was apparently taken at an event set up in order to give U.S. servicemen an early look, has now been posted on Youtube. Though the video is slightly grainy, it is easy to confirm that this is indeed Halo 3 judging from the gameplay, and from the title screen shown. Also, notice how smooth the framerate is even for a mid-development build.
