A free program for Android, by Studio Ampersand.

The Ground Zero community is a hardcore group of players who live for the thrill of the hunt. The game is inspired by the real-life events of the first nuclear war, and its outcome, which is a brutal mix of radiation and chaos. The world is a dangerous place to be, and you'll need to scavenge for supplies and build weapons and armor to fend off the hordes of zombies.

The apocalypse has arrived, and humanity is on the brink of extinction. Your mission is to survive in a world where humanity is turned into a deadly virus. To stay alive, you'll need to gather resources, build weapons, and craft armor and clothing to protect yourself from the dead.

The crafting system in Ground Zero is based on the real-life process of making weapons and armor. As you progress through the game, you'll gain access to a wider variety of items and equipment.