Dueling Games: Before Square and Enix merged, Final Fantasy and Dragon Quest were very much rivals of one another. Even today (mainly in Japan), there is still some rivalry over which series is better.
And within the Broken Base of Final Fantasy fandom, while many different games' fans are at each other's throats, likely the best-known rivalry is between fans of Final Fantasy VII and Final Fantasy VI, with many of the latter resenting the former's popularity, which is believed to be undeserved as compared to their own game, and the former thinking (if they care at all) that the title of best FF game is theirs and the old-school fans need to get over themselves already. This usually manifests itself as fighting over which game had the coolest villain.
