Wow, didn't know it could be so bad. I'm acrophobic myself, but it's mainly limited to footing I can see through, and waist-high railings being the only thing separating me from a fall IRL.
Video games, it's not a problem. You just won't find me climbing one of those towers of rope, and nets in places like Dorney Park/Sesame Place, or 4 stories off the ground on a fire escape unless the building is actually on fire...