Homeworld 2 - gamefront.com

In Homeworld, the inhabitants of a forsaken planet discovered an ancient tablet that revealed their true origins and launched them on a perilous voyage to their ancestral home, the far-distant world of Hiigara. After building a massive Mothership and taking aboard thousands of colonists they set forth with high hopes, little realizing the dangers that awaited in their journey across the galaxy. After apocalyptic battles and grievous loss of life, they finally reached Hiigara, the homeworld of their forebears, and reclaimed their birthright.