What language to use to write the server for the Unity3D client?

Question

Unity

Hello everyone, I don’t know in what language to write a server for a client in Unity3D, I think that c# is ideal, if it’s more suitable, then what tutorials would you recommend?
PS game is 2D, something will be similar to MMO RPG, similar to Terraria (it will look exactly like in the game Terraria).

Answer 1

Anyone you know. The web is good because the client does not care what is on the server, and vice versa.