First of all, I installed the game. 5 CDs. Long install. Next I tried to sign up with steam. After about 30-45 minutes I finally got a steam account. Now I had to input my CD key. This took another 30-45 minutes (steam servers were pounded all night long). Afterwards, I tried firing up my game. *BUZT* My video card drivers are out of date (Radeon 9600XT, FYI). Fine, go to ati, download the newest drivers. Install. *BUZT* Needs SP2... been avoiding upgrading to SP2 until I had to... I had to. So, 45 minutes later SP2 is installed, newest video card drivers installed, CD Key in (not registered yet, but it allowed me to play the game, anyway, while the registration kept going through). Finally hit the game and it started to load. Total install time ~2.5-3 hours.
Anyhow, the meat and potatoes. I got in a good 1-2 hours worth of playing time. The graphics are on par with Doom 3 (doom 3 was all about demons and stuff, this is all about humans and stuff)... really gorgeous stuff. The lips move with the words and everything...
The plot, of course, kicks the pants off of Doom 3. The beginning is much like the original HL. No weapons, no suit, nothing... you gotta just keep going and do what the masked men tell you (the game starts off in a very 'big brother' type world). Its kinda spooky... has some matrix-like chase scenes... caused emotions... got adrenaline pumping... very well written and done. And I can't tell you how great it was to get a crowbar and give the hurt to those frickin guard/masked men. The game is kinda gory... blood does spew. Its the first game I've played that has GOOD ragdoll physics (Deus Ex: Invisible War has ragdoll physics, but its poorly done... so poorly its almost funny... like shooting a guy in the head and his legs come flying in the air and land in an upsidedown split).... anywho, I dare say so far (1 hour into it) its better than Doom 3, and is making a run for being better than its predecessor.
But, take this with a grain of salt. I enjoyed the beginning of Doom 3 until the game became "grab an item, false walls raise and demons come out" crap.
There is no multiplayer, yet (there is a co-op version coming out, called "sven's co-op"), but if everyone wants to share their steam id's, mine is "FortKnox."
Update: I failed to mention the only 'bad' part of the game I didn't like. The game is a bit too linear to play so far. Granted, the beginning of games SHOULD be linear to get the newbies aquainted with the game... I'm just finding it a touch too linear for my tastes. I'll tell you if things change or not.