Darwinia+

A virus has torn through the Darwinian civilization — a peaceful digital species that evolved across thousands of generations inside a virtual world. Their numbers are shattered, their territory lost. You serve as their protector, commanding the surviving Darwinians to fight back and reclaim their world from the infection consuming it. Once the campaign is mastered, a multiplayer mode opens up strategic tribal warfare: rival armies of Darwinians clash in a desperate struggle for supremacy.