Fallen.Haven.GOG

The planet New Haven was supposed to be a paradise, an idyllic, peaceful new home for colonists from Old Earth. But that was before the wars broke out, before the provinces turned on one another, and before the aliens arrived...
Unwittingly, Earth scientists awoke the sleeping giant of the Tauran war machine. The same deep-space probes that first discovered New Haven also alerted the aliens. Now the Taurans, warlike aliens previously unknown to humankind, have mounted a campaign, descending upon New Haven with one goal: total conquest.

Strategic and tactical levels of gameplay
Build structures, research technologies, and fight battles
Play as humans or aliens, each with unique strengths and weaknesses
More than 15 territories to conquer in each scenario
Multiple difficulty levels