According to reports, a new Metal Gear Solid demo was shown at today's 25th Anniversary event. Dubbed Metal Gear Solid: Ground Zeroes, Kojima Productions showed off the demo using the new Fox Engine.

Attendees were not allowed to take photos, but reports on Twitter from 8-4's John Ricciardi and Mark MacDonald said the demo started with a real-time cutscene that went straight into gameplay. It showed off an open world level with Snake killing guards, evading search lights by crawling, and riding around in a jeep. The demo was reportedly running on a PC.

It's unclear at this time if the demo is part of a new game that's in development or if this is merely a tech demo to showcase the engine. Check out the first image from Famitsu.