Children with cerebral palsy often face challenges related to muscle stiffness and limited movement control, which restrict their ability to engage in daily activities and can lead to a lack of motivation in repetitive physical therapy exercises. This research focuses on developing a semi-automatic robotic-assisted software program to support upper limb muscle rehabilitation for children with cerebral palsy, integrating gaming technology to enhance engagement and enjoyment. By transforming therapy into a game-like experience, the program encourages children to perform physical therapy exercises consistently and more effectively. The developed program includes both 2D and 3D game formats. The 2D game is designed for simplicity and ease of use, making it suitable for the initial stages of therapy. In contrast, the 3D game leverages VR technology to provide an immersive experience, fostering greater patient engagement. The games are designed to involve movements of the arms and hands to collect objects or avoid obstacles, offering a fun and challenging way to enhance motor skills and improve muscle functionality over time. This study introduces a novel approach to cerebral palsy rehabilitation and demonstrates the potential of gaming technology in medical and therapeutic contexts. By merging the enjoyment of gameplay with therapeutic exercises, this approach helps to reduce stress, increase adherence to therapy routines, and ultimately improve the quality of life for pediatric cerebral palsy patients in a sustainable way.