What if beside each game there is a little light that tells you if you've played that game before like if it were green then you've played it but if it was red than it hasn't been played because there are alot of people out there that want to play all the games but it gets confusing after awhile of which one is played and which one is not.
This is a good suggestion. Sometimes i'll play a game for like 30 minutes then realise i've played it before. There's a lot of games on here, a lot of different series and it's hard to remember all the ones we've done.
Something similar this is being considered for AG3. The idea was to show the games that you haven't rated. I prefer that idea more, but I don't see a problem with both of these ideas being added. I say it'd be convenient for many people.
You'll already be able to see a history of which games you've played recently. While we'll track this history for a while, I don't know that we'll track your stats *indefinitely*.
I'll mention this to the webdev team, see what they think.