Any keyboard will do the job, however if you want more of that gamery feel without spending too much, you can check out some chinese brands like E-Element, Ajazz, Magiforce etc
If you're not sure whether you'd want the extra features of the various gaming keyboards on offer, you can get a cheap and basic keyboard for now, see how you go, and then make your mind up as to what extra features you'd benefit from in a future keyboard.
Agree with all the above. I used standard keyboards for about 5 years playing FPS games and never had any problems. It’s when you’re playing mmorpgs and things that gaming keyboards come into their own with macro keys etc.