The game industry reviewers may have redefined it to mean something else, but obviously this not widely understood/accepted. If a game couldn't (reasonably) have done anything better, then sure, give it 10/10. I have yet to play such a game however, by a long shot - even games I really like. When you read reviews, the reviewers gripe about this or that aspect, and then proceed to ignore that when assigning a score. Then you get all sorts of different scoring systems - its a mess. I wish they'd throw away numbers and give games some overall thumbs up/thumbs down type rating with a detailed list of pros/cons and "if you like X… you will like this", "if you didn't enjoy Y", you will not enjoy this" and so on etc.