The number of Bust-a-Move-style bubble games on Facebook continues to grow at an exponential rate, making it increasingly hard for any one game to stand out. King.com's Bubble Saga managed to do just that thanks to a clever and unique physics-based take on the genre, and the similarly titled Bubble Witch Saga attempts to do the same with ... witches. There isn't anything new here in terms of gameplay, and the experience actually feels like a step back from Bubble Saga. That's not to say that Bubble Witch Saga is a bad game, as it's solidly crafted and visually polished, but it's also not any different than all the other bubble games out there.