Earth 2150 Trilogy is a sci-fi strategy game for Mac OS.
Download from the developer's website

Alternative apps

Google Earth Pro
Google Earth Pro
FREE
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Google Earth Pro gives advanced business tools in addition to all the easy-to-use features and imagery of Google Earth.

Skies of War
Skies of War
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Action aircraft battle game for Mac.

Nether Earth
Nether Earth
FREE
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Nether Earth was the very first real time strategy game.

Adelantado Trilogy: Book Two
Adelantado Trilogy: Book Two
rating

Addictive strategy game for Mac.

Google Earth Action Pack
Google Earth Action Pack
FREE
rating

Set of Automator actions.