Texas border guard

This is a first-person shooter game, the late 21st century, the world is overcrowded, the world is full of hunger and viruses. Small countries have long been crowded in by refugees from all over the world. However, aliens also appeared in this world. Because the whole world is paralyzed. So I want to take advantage of it. Their first attack was on Texas in the United States. So, soldier. Take up a…