A hardcore gamer is a gamer who is not blinded by nostalgia. A gamer whose abilities to discern childish, mindless fun from deep and intriguing entertainment far surpasses that of a casual gamer. A gamer who recognizes that sheer content and gameplay falls flat if a video game's visuals are not up to par with today's standards and expectations.
Truly, a hardcore gamer is a respectable gamer. A gamer who does not let immature temptations sink their reputation for good, and who acts their age.