"Save Friends" is a free-to-play simulation game developed by Sour Taste for Android devices running on OS 9.0. The game is set in a world overrun by zombie viruses, and your objective is to build a shelter and save your friends. You can venture out into the world to rescue goods and avoid zombies, or you can passively collect supplies from your shelter. As you progress, you can buy hats, glasses, and furniture to decorate your friends and your shelter. The game is easy to play, and the more friends and furniture you collect, the more points you accumulate. The game also features boss zombies that appear randomly after you pass 300 points. Defeating boss zombies will reward you with materials that can be used to improve your shelter.