Unity Animation (Animator / Mecanim) Control animation state with Unity 6.3 LTS's and Animator Controllers: parameters, transitions, blend trees, layers, and humanoid IK. Targets Unity 6.3 LTS (6000.3) . When to use - Use when connecting animation clips into a state machine, driving them from script via parameters, blending locomotion (idle→walk→run), layering an upper-body action over movement, or adding foot/hand IK on a humanoid rig. - Use when the project has (Animator Controller) and assets, or a rigged model with an Avatar. When not to use: simple non-skeletal value tweens (UI fades, po…