Procedural Hit Reaction System is a Unity asset that enables realistic, dynamic reactions for characters and objects when hit or impacted. It uses procedural physics-based calculations to create lifelike responses, including stagger, knockback, flinching, and ragdoll blending. Fully compatible with URP and humanoid rigs, it integrates seamlessly with existing animations and AI systems. With modular scripts and intuitive controls, the system allows developers to enhance combat, action, and interactive gameplay by adding responsive, immersive hit reactions in Unity projects.