Really good game with a top tuned Doom 3 engine!
The story is pretty good. You and your family gets abducted by aliens and you have too save your girlfriend pretty much. Not too original but it does work. Personally i didn't played the game because of the story but more for the experience, which is awesome!
The atmosphere in this game is what makes you wanna finish the game! The whole mothership where the game takes place has an organic feel too it and even the weapons are organic (except the wrench which is from earth). I didnt feel like any of the levels where reruns either. All the levels where original and fun to play and they had even put some puzzles in there. ^^
Human Head Studios have really taken some of the best things from other FPS and put it all in this game (in a good way) and they have also come up with some new stuff, like the portals! Yeah I know that portals have been in other games but these ones are revolutionary! they really are portals, not some lazy ass **** with loadscreens or stuff! They are what i like to call it "Real-Time-Portals". It is pretty hard to explain but try the game or download the demo and you will see what i mean. ^^
Overall a great game which was worth the wait! (10 years)
Packed with good graphics and fun gameplay!