What is "Hardcore"? Whats not?

[staticneuron]

ckmlb said:

The adult or kiddie type of game doesn't determine if it's hardcore it's the amount of depth to the game.

There are games that are in the middle of both, Mario and GTA are both not hardcore games neither are they casual games.

Pokemon is a kiddie game but it is a hardcore game, so it's not a question of how 'adult' a game is.

 Actually this is a pretty good description.