Doom3 was bizzare. I couldn't quite understand how they did what they did.
Monsters: good. True to the original, yet updated. Sometimes genuinely scary
Weapons: good. Though the chaingun should have run on pistol ammo
Plot: good. Simple, vaguely spooky, Satan here, Hell there, yadda yadda yadda. Boilerplate stuff
Interface: potentially amazing. The attention to detail, little things like how you have to navigate menus on screens you're looking at to do stuff, that was nice. I would have liked to see more
Levels: good. Nice layout, felt like a mars base. Portions of the "converted" base felt damn creepy, but Hell wasn't scary enough.
Gameplay: booo. BOOOO!
How exactly do you take great elements and turn them into feces? I'll tell you: make generic, predictable scares everywhere, make sure that picking up any type of medkit, ammo box or keycard spawns a thousand legions of doom, and rely on guns without flashlights built in to set the "spooky" mood. Not good.
If game developers would take the proper amount of time required to make games anymore, and if they developed them to something beyond knee-jerk reactionfests, (excepting games like Painkiller and Serious Sam) then we might actually have something decent to play. As it is I think gaming has taken a serious dive since Deus Ex and may never recover.