“Custom Painting X” is a Unity-based educational software introduces various painting brushes, each designed to replicate real-world tools. It highlights the unique characteristics of mediums like crayons, gouache, charcoal, and watercolor, providing an authentic artistic experience. I aim to encourage creativity while offering players a scientific understanding of these tools. It serves as an interactive platform for users to explore and familiarize themselves with different painting techniques in a fun and engaging way.