Earth has fallen. Humanity has fled. You are the last hope. In 2150, a deadly digital virus consumed the planet. The last survivors launched Protocol Zero: A high-tech medical Nanobot designed to reclaim our home. Your mission? Dive into the microscopic world, hunt down the infection, and save the remaining friendly Human Cells. FEATURES: Story Mode: Travel through 20+ unique locations on the World Map, from the ruins of New York to the Eiffel Tower. Tactical Combat: Don't just spray and pray! Use manual fire control to destroy viruses while avoiding innocent Human Cells. Epic Boss Battles: Face off against giant, mutated strains like the Cowboy Virus, Sumo Virus, and Royal Guard. Tech Lab Upgrades: Collect Bio-Coins to upgrade your Nanobot’s Fire Rate, Damage, and Multi-Shot capabilities. Cinematic Experience: Fully voiced intro story and immersive sound effects. Can you cure the world? The Nano War begins now.