How quickly does a game have to hook you before you put it away?

[sergiodaly]

i always finish my games... so i don't give up easily. if a game isn't doing it for it at the time i just change genre and get back to it in the future... in my current collection i have just 3 games to finish... (motorstorm, bioshock and assassins creed) all unfinished because of lack of time and few desire to carry on the "heavy work"