Yorg.io is survival strategy game, where you need to build and upgrade your base and fight against zombies.
The main goal of the game is to hold out as many days as possible against zombie attacks. If the zombie managed to destroy your base, then you lost.
First in the Yorg io you have to collect resources. Then build factories and connect it with the production of ammunition and towers defense.
You can upgrade your base up to level 7 and all other buildings. First of all, upgrade mines that get resources, so that you can get more resources.
Zombies attack at night. So, for the day you have to build a powerful base and protection. If your base has withstood a zombie attack, then it will recover automatically.