If this question was already asked, My apologies. I am new to gaming with Unity. The free version only allows me to develop a stand alone game in either Windows, Linux, and Mac correct? I will have to purchase the Android regular or Pro in order to develop for Android. Can I use the Free Version of Unity with Android Pro? So if I wanted to develop a game with AI path-finding I will need to spend $1500 or do they have other tools in the store that will allow me to use AI path-finding. Can I purchase cheaper tools in the store that do the same as the tools in the PRO version. Can I purchase tools separately… on a as needed bases?
You can purchase things in the asset store, or you can build your own system for pathfinding and AI, but to use unitys build in systems requires the licensing I think.
As for unity indie/free building, yes only windows mac and linux builds without any licensing.
You can purchase anything whenever you need to, such as the different license options, and the stuff in the asset store. Like start out developing for windows or whatever, and decide later to make an android version and get that 400 dollar license, no problem you can do that.