Video games are big business. Stereotypical young males aren't the only market--for example, it's not uncommon for commuters to spend their train ride home with a Nintendo 3DS or an iPad. At home, they might unwind with a few rounds of Call of Duty while sitting on the sofa. But if you are addicted to your 3DS or your Xbox 360, I have to admit that as a PC-game fan, I'm sorry to hear it. Console and handheld game systems haven't always been the most popular platforms. PC titles once ruled the gaming world.

Not long ago, the PC appeared to be the last bastion for hard-core gamers, as home consoles struggled to keep up with the PC's amazing graphics and fast gameplay. These days most great games are released on all major platforms, but you can still find a bevy of brilliant titles that are available only to players with a performance PC. Here are a few of our favorites; take a look, and you might uncover a few hidden gems.