You can play Last Shelter Survival on your desktop computer PC or MAC by using Memuplay, Bluestacks or NOXPlayer. These are free programs you can download and operate as an Android emulator for your PC/MAC. With NOXPlayer, you can run multiple instances of the game in different windows. Bluestacks does not appear to offer this capability, so you can only one run game window at a time. These emulators make a window that looks just like an Android phone with the Google Play app and all.
One thing to remember, the first time you login to Last Shelter Survival in the emulator, you will have to go through the game’s tutorial before you will be able to get to the Account icon to load one of your accounts. But it works great!