The Island Owner of the System

An orphan traveled to parallel time and space and became the heir of an island. But what should I do if the island is occupied by others? It doesn't matter! With the system in hand, I own the world. I can easily take back territory and drive the enemy out of my island. Our slogan is: My island is my decision! Friends who have played city management simulation, don't miss it! Ps: Group number: 272454631