The rule of thumb is this :
If a game is widely lauded as a 10/10 by reviewers, but me and 10 friends think it's an average to slightly above-average title, I'll consider it officially overrated by consensus.
If a game is widely lauded as a 10/10 by reviewers, but I think it's average, but most/all of my friends think it's excellent, I'll consider it not overrated, but rather just not my cup of tea.
The converse is true with underrated titles.
Objectivity >>>>>> Subjectivity (even though true objectivity in judging abstracts such as 'fun' and 'art' is fundamentally impossible to achieve perfectly).
Anyway, all of this is why I stress terms like 'imho', or 'as far as I'm concerned', or 'for me personally'.
Stating 'I don't care much for X' is so much more sensible and less trollish than 'X sucks dog crap', and anything is better than tools who say things like 'If you like (or don't like) X then you are an /'.







