Description of the marking process, finishing a game before reviewing; et cetera.
With the benefit of hindsight, our marks reflect the importance of a game in the context of what came after it. This allows a certain amount of “fixing” review scores of games by retroactively re-reviewing them while considering the staying power and lasting influence that it demonstrated after being released.
Though it could be argued that wistful nostalgia will tamper with a game’s final score just as much as initial excitement...