I usually play computer games not more than 2 hours and that too only at weekends due to extensive busy schedule in week days. i will suggest especially youngsters that they should not play computer games more than one hour a day because it can harm their eye sight as well as studies.
May be occasionally 1-2 hours per year. I don't like playing computer games. It spends a lot of my free time.
When I'm in college I used to play online strategy games.. it update hourly.. so I play it almost every 2 hours.. for 4 months..
Nowadays, I spend around 2-3 hours everyday playing Mafia Wars on Facebook. It is quite an addicting game.