After a hiatus, the Quake series returns in all its glory.
In this game, you play as Matthew Kane, a marine who recently got plopped on Stroggos after the end of the events in Quake II. As Kane, you must penetrate the Strogg forces and destroy everything in your path.
The gameplay in Quake 4 remains basically unchanged from previous games: Destroy enemies, pick up weapons, complete objectives, repeat. At times it can get repetitive, but there are points where you get a chance to stop and take a breather.
As opposed to previous games in the series, Quake 4 gives you the opportunity to fight with a squad and drive vehicles, which gives the game some variety. The game also takes parts of Quake and its "sequel", with weapons and certain other elements in the game.
The game looks very spectacular graphics-wise. While it doesn't look incredibly realistic (blame that on the game's engine), it does dark rooms and shadowing very well. Outdoor areas also look nice.
The sound in the game is alright, weapons sound like they should and the voice acting is top-notch. As opposed to using hardcore guitar music like in Quake II, Quake 4 goes for a more orchestrated, militaristic feel in its music, which fits perfectly.
Once you're done with the singleplayer, you could try out the multiplayer. I can basically summarize it as such: "It's like Quake III, except with new weapons and on a different engine." There's still the same deathmatch, capture the flag and 1-on-1 that was in previous games in the series. That worked ten years ago, but nowadays that just doesn't fly for multiplayer. Thankfully all the maps are new.
All in all, Quake 4 has a good singleplayer, but the multiplayer is somewhat lacking. If you play Quake III, there's no need to get Quake 4, but if you just want to see the next part in the Quake II saga, then Quake 4 should be one to check out.