Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download MiniMap (Radar) System Free.
MiniMap Radar System v1.0
Mini Map (Radar) System
This is a simple minimap written in C#. Perfect for simulators, fps and many other games. Installation takes only few steps.
– 4 different skins (PSD included)
– Two modes: fixed map and rotated map
– The objects farther than map radius can be hidden or can stick to the border (optional)
– Different transparency for objects that are farther than map radius (optional)
– Different markers for different objects