I believe there are hardcore tetris gamers. Although the game has been made for casual gamers.
Civ and X3 are made for hardcore gamers. There will be a fewcasual gamers who lookat the back of the cover and think hey that looks cool. In the end they are not satisfied with that game cause it's too hard.
It's funny but even rugrats can be hardcore only a very few people would with this game. 8 year old kids could be hardcore gamers. But you can also say that kid is just very very good at that game. You can play a casual game hardcore style. Speed runs are a good example.
But that's about gamers.
About games: It depends on were you draw the line between hardcore and casual. Although I think that Counterstike is a hardcore game. It became so popular that casual gamers began to buy and play it.
