Named Game of the Year by over 50 publications, Valve's début title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.
There is also a bug in the first map, whereby GMAN can get stuck on the lift. If this happens, just restart the game. McBeth was made over 9 months, and is my first map pack for any game. It was mainly a huge learning experience for me, from which I have learnt much.
Fun little mappack that came out in 1999-2000. The maps are commonly extremely narrow spaces without much space to move around, but they start becoming more and more interesting as they went on. Some cool scenes here and there like wading through engine fuel, which if you shoot, will blow you up, a boss fight, cutscenes etc.
I'd say this is one of the more impressive packs of its time.