Designing arcade machines for mixed-reality (MR) experiences presents unique challenges that blend physical and digital worlds. One major hurdle is hardware integration—combining robust arcade components with advanced VR/AR systems while maintaining durability and cost efficiency. Another issue is user interaction; traditional joysticks and buttons may not suffice for immersive MR gameplay, requiring innovative input methods like motion tracking or haptic feedback. Additionally, spatial design is critical, as MR arcades must accommodate both free movement and safety constraints. Content development also poses difficulties, as games must balance high engagement with quick play sessions typical of arcades. Finally, maintaining hygiene and comfort with shared VR headsets adds another layer of complexity. Overcoming these challenges is key to creating compelling mixed-reality arcade experiences.