Using Unity 2018 Unet Network, this is instance based client side which means it can support 2 to 100000~ players 100000 given that your game is well optimised and server is a beast! . 20 is good decent number tho.
Example Unity package attached. Change Ports. Very basic using default unity setups. Use asset like network lobby to enhance the server making and connecting easier.
Ps- those numbers are super exagerated but 20-40 or 100-200 maybe. you knew it tho.
ref / further understanding:
https://www.youtube.com/watch?v=Z74uc-Lcu84 (server setup)
https://www.youtube.com/watch?v=c3AHJm8Ni9k&t=1647s (player)
https://www.youtube.com/watch?v=yx7yI2MJTNE(cam)(<tutorial by selena gomez)
using unity 2018. Network
By Sahaj Garg
Email Sahaj Garg
Published On: 26/06/2019