Quake4 Demo
 

Finally, the Quake 4 demo has been released, although it is single player. It can be downloaded here.

quake 4 isnt that good, its very repetitive and boring :/ , so dont donwload it

I beg to differ. It is a great game, though in my opinion not as great as Quake 2 was, but still good.

I think you can call every first person shooter repetitve in some sense.