I am not going to write the list..there are so many games which have a multiplayer option :\ here are some popular multiplayer games in pakistan:
- Counter Strike
- FEAR
- Need For Speed
- C&C red alert & generals
- Warcraft III and DotA edition
- Medal Of Honor
- Quake
- Unreal Tournament
- Word of Warcraft (not much popular in pakistan..)
- Company of Heroes
And few more...