Yes, there are many great FPS games available.
Yes, there are many great FPS games available.
CS:GO is definitely doable with almost any setup. CS:1.6 is quite enjoyable and needs a PC from around 2001. CS: Source works similarly. I prefer Counter Strike. Blacklight: Retribution and Insurgency are also great options.
Already on the second page and no one has suggested Insurgency yet?
Already on the second page and the OP hasn't shared his system details yet...