Quake 4 would've been a much a better and impresive game had it been realeased on the first xbox
several enemies in the screen at once (even during the cut scenes where you see a lot of characters together), and evolves into a real mess
in the latest levels of the game due to the increased number of enemies you need to defeat in a matter of seconds. Another problem is that the game, graphically, resembles too much Doom 3 and it makes you wonder if the first xbox could manage quake 4.
The game doesn't do anything new to innovate the FPS genre and the gameplay feels very basic, nevertheless, Even with all these problems, the game manages to be fun. The music is moody and there is one cool track that plays 3 or 4 times in some crucial moments during the game and the sounds effect are good too. The multiplayer portion of the game feels a lot like a PC multiplayer and its a nice addition but It could be better, anyway if you like playing online then, quake 4 will give you more hours of gameplay specially if you like unlocking xbox 360 achievements. finally, Quake 4 single adventure portion of the game will last you some 8-10 hours and it is kind of fun despite some evident flaws.