This sentence from the abstract basically covers your first point: > We predicted that reconsolidation of a reactivated visual memory of experimental trauma co

This sentence from the abstract basically covers your first point: > We predicted that reconsolidation of a reactivated visual memory of experimental trauma could be disrupted by engaging in a visuospatial task that would compete for visual working memory resources The fact that it was a video game wasn't the important part, and completely different styles of game wouldn't have triggered the mechanism they're proposing. From what they're saying, I'd sooner expect things like or Sudoku or Minesweeper to work, rather than Xenoblade Chronicles.