When comparing Unity 2D vs DragonBones Pro, the Slant community recommends DragonBones Pro for most people. In the question“What are the best 2D skeletal animation tools?” DragonBones Pro is ranked 2nd while Unity 2D is ranked 5th. The most important reason people chose DragonBones Pro is:
This is a very useful feature because you can make a walk animation that you can simply change the animation weight to see the character start running, because it will increase the scale of the movement of the bones in the animation. This will increase the hand and the leg swing as you increase the animation weight and the character, making it appear as though it is running.
Specs
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Pros
Pro Built into Unity 4.3+
2D game creation was a major feature request from the Unity community and was added with version 4.3. 2D is provided in both the Pro and Free distribution of Unity.
Pro Integrates with Mecanim
Mecanim brings state machines and blending to 2D bone animation. The state machine editor allows for designers and programmers to visually create a Finite State Machine (FSM) to control when animations should play. Mecanim also allows for blending so an animation can transition smoothly between two states without the need of in between frames made by an animator.
Pro Sprite Sheet and Bone based animation supported
Both types of 2D animation for game development are supported in Unity’s system and can be used interchangeably in the timeline.
Pro Easily change sprites dynamically
Usually used for character customization, programmers can change any sprite in a bone animation at runtime easily by referencing the bone and loading the new sprite from the resources folder.
Pro Animation weight
This is a very useful feature because you can make a walk animation that you can simply change the animation weight to see the character start running, because it will increase the scale of the movement of the bones in the animation. This will increase the hand and the leg swing as you increase the animation weight and the character, making it appear as though it is running.
Pro Switch sprites
Can easily switch sprites in between the animations like switching clothes and other multiple behaviors.
Pro Completely programmable animations
Watching and moving can be programed depending upon certain events.
Pro Animation speed changing, bone scaling, switching postures
Size as well as animation speed can be easily changed during an animation.
Pro Multiresolution with texture scale
Can easily export to different texture sizes to target multiple resolution platforms.
Pro Color transform, changeable Z-Order
Can easily change the Z-Order of a sprite during an animation and can also change the color mask on a sprite, in between an animation.
Pro Animation reuse/clone
Create once and use the same animation for different characters just by simply cloning the same animation for the new characters.
Pro Nesting skeleton, timeline tween
You can nest skeletons and change the timeline of the animation in between the animations in order to make some cool effects.
Pro Flash Pro extension, WYSWYG
There is an extension available for Adobe Flash users, which gives a WYSWYG design window inside of flash.
Pro Open source
Cons
Con Lacks critical features
- Vertices can't be animated, so you can't have ANY organic feel (like... lungs breathing).
- Parent bone can't be animated without affecting the children. This is especially impeding for organic feel, again.
- No option to show & unshow assets (or it is hidden), like for switching weapon on your character for exemple.

Con Poor script interface for texture atlases
Accessing individual sprites within an atlas texture is possible at runtime, but requires use of the Resources folder subsystem.
Con Almost no documentation
Con Not developed anymore
Publisher/ Developer dropped support for the software and left it in the dark. Use Spine instead.
Con Deceptive pricing
It's not "free" if you can't save, and tutorials cost money.
