"Id did a superb job of creating an environment ¿ atmosphere ¿ that sucks you into the world and makes you not want to put down the mouse and keyboard until you¿ve beat the game. That said, we¿ve found ourselves needing a break about every hour or so because the game tends to wear on your nerves (that¿s a good thing in this case). We can¿t remember the last time we played a game that spooked us this much.

Part of the eeriness is the interaction of your character to the environment ¿ there¿s definitely a great physics engine in Doom 3 which allows for many parts of the facility structure you¿re in to move around ¿ you can, for example, move boxes and chairs around, all of which behave very naturally. There is quite a number of scripted events too which modify the environment; all of which add to the suspense. The enemy too, at times, will use barrels and other things to throw at you."

"As virtual worlds go, Doom 3 is big. To play through it just once, never mind multiplayer matches and replay time, takes upwards of 30 hours. (Take that, Peter Jackson!) Despite its size, it is meticulously detailed. The monsters of the original Doom were barely animated blobs of pixels; this time the game is populated by a gallery of fascinating grotesques and gargoyles created by Kenneth Scott, id's soft-spoken lead artist, whose work references Francis Bacon and cheesy fantasy artist Frank Frazetta with equal reverence. The ghouls are excruciatingly detailed. As you're being devoured by a swarm of demonic cherubs, you can admire the iridescent patina on their insect wings. To play Doom 3 is to feel your skin prickle with atavistic fear. It's a bit too lifelike for comfort.