Designing arcade machines for physical rehabilitation requires a careful balance of fun and functionality to ensure effective therapy. Key considerations include:

1. Accessibility: Machines must accommodate users with varying physical abilities, featuring adjustable controls, ergonomic designs, and intuitive interfaces.

2. Therapeutic Goals: Games should target specific rehabilitation outcomes, such as improving motor skills, coordination, or strength, while tracking progress.

3. Engagement: High interactivity and rewarding feedback loops keep patients motivated, making therapy feel less like work and more like play.

4. Safety: Sturdy construction, non-slip surfaces, and fail-safes prevent injuries during use.

5. Customization: Adaptable difficulty levels and personalized settings ensure the machine meets individual patient needs.

By integrating these elements, arcade machines can transform rehabilitation into an engaging and effective experience.