| Yakuzaice said: But if I had to take a shot in the dark, I'd say they use leaderboards which PS1 games don't have and retail/PSN games would be mixed between retail sales, PSN sales, rentals, used copies, borrowed copies, etc. Not that plain downloadable games don't have plenty of factors for error with multiple accounts and game sharing. |
Yeah they probably use a % of margin of error and look at the leaderboards to see how many users are registered. Last I checked (though it was last week) Castlevania HD had 70k registered users on the single player leaderboards for Chapter 1 Normal, so you probably throw in 5k (or whatever the formula may be) of users who used a friends game signed (I think that would be a bit high, but just saying) etc.
It's just that simple.
