Download PolyNav – 2D Pathfinding FREE Unity. 

Poly|Nav is a lightweight polygonal based 2D pathfinding solution using A*, that is extremely easy to set up and use, made for your Unity’s new 2D system games!

• Define the walkable and obstacle area polygons with ease!
• Generate or update the navigation areas in runtime for procedural levels!
• Includes a complete steering agent component!
• Use an easy API to control your agents!
• Includes NodeCanvas tasks!
• Includes Playmaker actions!

PolyNav can be great for Adventure, Isometric, Side-Scrollers and Top Down 2D Games!