help suggest a game for me

hey all. im gettin somewhat tired with my current selection so i was hoping you all could help me out. iv been doing the random mission generator on soldier of fortune 2: double helix for a bit, its fun, but all the missions are the same pretty much. here are my requirements:

• first person shooter
• urban terrain, preferably very urban, like house to house fighting
• can be a mod for a game already out (like desert combat is for old bf1942)
• peferebly set in modern time, but that doesnt matter that much to me
• and for pc, not console

if you all could help, it would be much appreciated

 

Call of Duty. Its totally different every level, and most of the time you go from room to room.

 

rainbow 6 ,3 + xpansion

 

Id have to say Ghost Recon 2, Rainbow Six (any of them).

-Brian