This is Guard Duty. Put your feet in the shoes of Barney Calhoun, a security guard at the Black Mesa Research Facility who has no idea that the next few hours are going to change his life forever. Re-live the exciting adventure of Blue Shift, now re-created in the award winning Source engine.
Some fairly old concepts we showed on Facebook page some time ago as small exclusive media for FB subscribers.
Made by talented artist Blaze.