Being trapped in the "Tron Legacy" universe wasn't exactly the most natural experience for Olivia Wilde. But, as the actress told MTV News at San Diego Comic-Con over the weekend, once she got used to being in a life-size video game, she fell in love with its artificial landscape and adrenaline-infused sequences.

"People always say, 'Oh, it's all CGI. Were you just acting on green screen all the time?' " Wilde said as she showed off a re-creation of part of the movie's set. "Our director [Joseph Kosinski] is an architect, so we had sets that were so beautiful that there would be an audible gasp when people walked on the set."

As breathtaking as the set was, filming the movie doesn't exactly sound healthy for the actors. "You know everything about this world was unfamiliar to us," Wilde explained. "It was totally non-organic and so you had to kind of get used to what these surfaces would be like, and never seeing the sun. And we actually got to experience that, because I don't think any of us saw the sun for five months."

Wilde said she got really into the action sequences of the movie, which comes out in December, as she played the "enigmatic" — but not overly sexy — Quorra.

"She's a warrior princess kind of thing. She is a companion and confidant of Jeff Bridges' character, Flynn, and she's been with him for a very, very long time," she explained. "And when Sam, his son, [played by Garrett Hedlund] finds himself within the world of Tron she becomes his guide and when things become messier, she becomes a protector. She's certainly not the vixen. I wasn't interested in making her that."

Check out everything we've got on "Tron Legacy."

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