How long must a game so you can buy it?

[selnor]

Legend11 said:
It doesn't really matter to me. I usually spend double or triple or more time just working on getting achievements in a game. So a 8-10 hour game I might spend 20 or more hours on (especially the ones that require playing through it at different skill levels).

I agree. If your a 360 owner, games seem more valuable due to Gamerscore. It becomes a greater challenge afer you've finished the story. And funnily enough it's not boring to do. I'd say because of the Game achievements my games have had much more value.