Among the flurry of news emerging from the Metal Gear 25th Anniversary event in Japan, the most exciting is series creator Hideo Kojima's reveal of Metal Gear Solid: Ground Zeroes. Reports from Twitter users (via Joystiq) seem to confirm that the Solid Snake-starring stealth game features open world play, falling in line with what Kojima teased previously as Project Ogre.
Attendees describes gameplay involving a rainy nighttime scene, with Snake sneaking his way into an enemy compound while avoiding search lights and guards. He eventually drives off in a jeep and summons in a helicopter, all in the same seamless environment. Ground Zeroes isn't announced for any specific platforms yet -- the demo apparently ran on a high-end PC -- but it will serve to debut Kojima Productions' Fox Engine.
Find the full version of the above artwork after the jump.