Mobile app how does it work?

Question

Mobile development

Hello, I recently found the game Emperor and Concubines for myself, I was very interested on what you can create such a game and the principles of its operation
. I also noticed that the game weighs several times less than some of the exact same games (it weighs 30 mb, outdoor games weigh 300 mb) , despite a very good picture.
How is the communication between the client and the server arranged in it?
I also noticed that the game runs much faster than some other such games (for example, faster than the Supreme Mandarin)
I re-read everything I wrote, it sounds like an advertisement (this is not an advertisement)
And another question, what size team is needed to create such a game?
I wanted to upload more screenshots, but it gives an error

Answer 1

How is the communication between the client and the server arranged in it?

as in any, REST API
And another question, what size team is needed to create such a game?
1(2) proger mabil
1 proger backend
1 tester
1 PM
1(2-5)artists