Running on the Bally Technologies software, Double Dragon is an excellent Asian-themed release with a couple of bonuses in store. One of these is the game’s Dragon Wild Feature, and this is your key to winning big. The Dragon Wild Feature triggers as soon as one or more replacing wild symbols appear on the gaming grid. Once the bonus triggers, the trigging symbols expand to cover multiple respective reel positions, and reels that include wild symbols lock in their place for the next spin.