half life 2 is a great game, other people would might not accept what i say but i think that the best shooter and so far game i have played is the half life 2 series even though it is more than a game, it has changed the way i have looked at games overall, the way you approach a game challenge or action scenes.
doom 3 was meant to revolutionize gaming but it was good but it didnt make it better even though it had physics but in half life 2 you can control your surroundings to fight and do challenges you face.
i like the challenges as it is well thought up as it is more than just pressing a hidden button, you mainly have to use the physics of your surroundings.

in this challenge featured in half life 2 episode 2 you have to get the car to the other side.
the bridge is damaged and is like a massive seesaw with a pivot in the middle.
you move the cars to the side the car is on and the physics movebridge so you can drive across.
we just have to wait longer for Half life 2 episode 3 to come out
you would also have to wait years for half life 3 to come out so until it does i am playing half life 2 and its many mods.