You mean like that one game with the twist? The one with the name that I can't say because that would be spoiling? ^^
Seriously though, is a "villain" defined by the way the story is presented or by the goals and ethics of the character in question? Is a "villain" a role in a story or is it a good/evil sort of thing? Because if it's the former then it can be really hard to make a game where you play as the villain since the villain is defined somebody the main character is up against. I mean, there are plenty of games where you play as evil people, but you could still argue that you play the hero in all of them. At least I think so...
Seriously though, is a "villain" defined by the way the story is presented or by the goals and ethics of the character in question? Is a "villain" a role in a story or is it a good/evil sort of thing? Because if it's the former then it can be really hard to make a game where you play as the villain since the villain is defined somebody the main character is up against. I mean, there are plenty of games where you play as evil people, but you could still argue that you play the hero in all of them. At least I think so...