ussnorway: its possible to add it... hell a [tag] is easy and doesn't need any special code skills
I don't see it taking off because average game time for me is a few months and other people I know will speed run say bg1 is a few hours
EDIT: Ok, now I see that on some game pages (GOG's only?) there's also info about 'all players average time'. You could catalogue all that info manually (if you don't have any programming skills). EDIT: If you want to rely on your own personal info... then read on: :)
Sure, If one wants to do it manually, then, yes it shouldn't be a problem... open every game's page you know you have completed, catalogue all the time you spent on them (in this case, I'm assuming you would not mind the 'extra' time you possible had spent after you 'finished' the game - like re-runs and such), then do the mean (or most likely the median to be precise).
What I'm proposing before is something more customizable... you could, for example, correlate time spent on a game's specific genre (like rpg) as opposed to another.
All that of course would change person to person... your average time on bg1 would be meaningless to another person, no one would (nor any legal code would) have access to it anyway. What matters would be the one specific person's game time, over all the games such a person has played (or 'completed').
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In the case of my specific project, I'd rely on 'completed' achievements as one of variables for determining whether or not you have "enjoyed" the game, total time, etc. Or so that's what I'm predicting machine learning will tell me.
