Interstellar Odyssey

In Earth year 2273, due to the outbreak of a world war around the world, a large number of nuclear weapons were activated, and the earth fell into a state of high radiation. In Earth year 2297, the earth can no longer survive, and the only remaining humans are forced to start an era of space colonization. In 1071, Human Year, humans have colonized stars in many galaxies in the universe, established peaceful relations with 117 highly intelligent civilizations in the universe, and established the Human Alliance. In 1763, the Human Year, the Human Alliance split. Since then, humans have begun an era of confrontation between the Human Federation and the Empire.