Roaming Wilds are a highly dynamic feature where wild symbols that appear on the reels during a free spins bonus round do not disappear, but instead move to a new random position on the reels with every spin. The core of this feature, unlike a 'Walking Wild' that moves along a set path to the left or right, is that you cannot predict where the wild will appear next. This provides a surprise and anticipation with each spin, as if a new game board is being set up every time.