brendude13 on 05 May 2013
Well...
These play times are just estimates and are combined from multiple playthroughs:
Runescape - >1,000 hours
Arma II - 600 hours (got this in August 
)
Pokemon Silver - 500 hours
Call of Duty 4: Modern Warfare - 500 hours
Call of Duty: Modern Warfare 2 - 500 hours
Final Fantasy XIII - 250 hours
Final Fantasy VII - 100 hours
Persona 4: Golden - 85 hours (got this less than 2 months ago )
I'm sure there are many games missing that should have made the list, just can't think of them now. Some play times are complete estimates, for all I know, Pokemon Silver could be 200 hours or 1,000 hours.
