Designing arcade games for spectator appeal requires a focus on visual engagement, dynamic gameplay, and social interaction. Vibrant visuals and eye-catching animations draw attention, while fast-paced, easy-to-understand mechanics keep spectators hooked. Multiplayer modes encourage competition and camaraderie, amplifying excitement. Clear feedback systems, like scoreboards and sound effects, enhance the viewing experience. Lastly, balancing skill and luck ensures both players and audiences stay entertained. By prioritizing these elements, designers can create arcade games that captivate not just players but also those watching.