DirectX animation file used by Antibody, a rail shooter game; contains animation properties for 3D game objects; used for animating the defender white blood cell, tape worms, viruses, and other objects.

3D animation file created by Maya, a professional 3D modeling application; saves references to objects and their animation properties; includes keyframes that specify anchor points of the animation; also includes rotations and the timeline.

ANIM files allow modelers to create smooth motions by defining a number of intermediate frames between keyframes that are rendered automatically by a graphics engine. For example, a human arm can move by specifying a starting keyframe at frame 0 and an ending keyframe at frame 20.

Animation file created by Unity, a 3D game development tool; created in Unity's Animation View and saves an animation clip; specifies the moving parts of 3D game objects using animation curves and events; can be scripted with the Unity scripting engine.

The Unity Animation View can be accessed by selecting Window → Animation.