Ground Zero Texas is a thrilling action-adventure game that takes you on a mission to stop an alien invasion in the sleepy town of Texas/Mexico border. Space aliens are infiltrating the U.S., snatching bodies and transforming them into Pod People-like drones. The government needs your help - a technician driving custom-built gun cameras mounted around the town. Your task is to monitor the town for alien activity, respond to protect the lives of citizens and agents.
The gameplay revolves around four camera feeds from locations around the town. These feeds show loops of banal activity, but indicators will alert you when important action is occurring at that location. Switching to that camera will allow you to watch crucial plot clips or defend that camera from aliens in a single-screen shooting gallery. As cameras take more damage, the picture from that feed degrades until the camera itself is destroyed.
The goal is to juggle between cameras so as not to miss an important plot point, while defending them from attackers or saving citizens from being abducted. In a neat twist, citizens who you failed to save may appear later as disguised aliens themselves.