Game Play -
I a word game play was every bit as exciting as the original Half Life and that is saying a lot. The controls are very familiar including the crouch-jump move that made its debut with Half Life. The new graphics make the world even more immersive that it was the first time around. In fact they help to bring new life into the original. Movement through the game world is accompanied by changes in lighting and sound that when they were first introduced in 1998 were something that had not been done before. Now playing through the game with new visuals the creepy and oppressive feeling or the underground Black Mesa Lab is brought back to life. Combat, well that is still the same basic system you have multiple weapons available from your trusty crowbar all the way up to laser guided missiles.
But Half Life is more than just killing the bad guys. There are also puzzles that you have to figure out to continue through the game. In the original Half Life these often involved the need to turn different valves in the right order (and in a certain time limit) to open a door. During some of these you also have to worry about bad guys trying to kill you just to make things more fun.