Galactic Civilizations II: Dread Lords
Galactic Civilizations II: Dread Lords is the sequel to the award winning PC strategy game, Galactic Civilizations. Galactic Civilizations is a space-based strategy game set in the 23rd century in which players take on the role of leader of a space-faring civilization. ... This sequel is a complete overhaul of the game that includes an extremely sophisticated visual ship design feature, fleet battles, planetary management, civilization manager, advanced diplomacy, and much more all encapsulated in a state of the art 3D engine.
http://stardock.cachefly.net/GalacticCivilizationsII_Demo.exe - 16Mb - Download - Screenshot

Galaxy Unfurled
... The growing unrest among the galactic legions forebodes of interstellar war. Posturing of alliances and positioning of fleets, and yet, even as the galactic warlords arm themselves to the fangs in preparation for combat, civilization somehow blooms on lush new blue-green worlds, undeterred ... ... The player must also create a sim civilization on each planet he colonizes, in order to gather resources, build ships, and research science to improve his empire. ... But there is more to the game than war.
http://www.fractalsmith.com/GalaxyUnfurled.exe - 11Mb - Download - Screenshot

Coral Clock 3D Screensaver
You are the sea explorer searching for the ancient lost civilizations. You have found some traces of the lost Atlantis near the coral reef island and you are submerging into the sea to know more about it. Deep blue sea reveals all secrets to you. Tropical fishes are swimming everywhere and... This watch is the legacy of the great civilization - huge construction made of stone and metal. ... You see and even hear as the huge gears are moving with scratches. ... The watch shows the real time! ... Then you notice that the hands are slowly moving.
http://www.soft2d.com/graphics_&_m...screensavers/files/coralclock.exe - 10Mb - Download - Screenshot

Coral Clock 3D Photo Screensaver
You are the sea explorer searching for the ancient lost civilizations. You have found some traces of the lost Atlantis near the coral reef island and you are submerging into the sea to know more about it. Deep blue sea reveals all secrets to you. Tropical fishes are swimming everywhere and... This watch is the legacy of the great civilization - huge construction made of stone and metal. ... You see and even hear as the huge gears are moving with scratches. ... The watch shows the real time! ... Then you notice that the hands are slowly moving.
http://www.photoscreensavers.us/coralclock.exe - 10Mb - Download - Screenshot

Flight over sea
We all live in a much overstressed world, where fear of terrorism, unemployment and other social problems mix with tremendous speed of civilization progress, globalization and information havoc, creating the ultimate disturbance. This screensaver invites you to take an air trip over the sea... Sit back and relax as the wind carries you away from your worries!
http://www.rixane.com/download/FlightOverSea.exe - 2Mb - Download - Screenshot

7art Mechanical Clock ScreenSaver
The clock is a mechanical living being that sails in the great river of time ahead of our civilization. Like the nights devide the days, the seconds devide the minutes and hours. Processes inside the clockwork are interfacing with the natural life cycles. ... The Mechanical Clock will help us to feel the pulse of the planet Earth and the rhythm of the Universe.
http://www.7art-screensavers.com/files/MechanicalClockInst.exe - 559Kb - Download - Screenshot

Trash
In the distant future, war has wiped out most of the human race and mutated some of those who survived. With civilization on the brink of the abyss, humans and mutants battle one another for their very existance over the only resource left to them - trash. ... Build your empire, research new technologies, and construct machines of war to eliminate your enemies in a fight for total dominance. ... Take up the fight for survival as either the Humans or the Mutants, harvesting the only resources left on the planet: trash, precious metals, natural gas and toxic waste.
http://storage.stardock.com/files/demo/Trash_demo.exe - 16Mb - Download - Screenshot

Starships Unlimited
Starting with one starship, explore the galaxy, uncover ancient alien artifacts and fight pirates as you expand your empire. In this game, starships are the heroes! Watch detailed space combat take place before your eyes. Research over 200 technologies from 4 ages. ... Only one civilization can rule the galaxy. ... Build up a spy network. ... Use it to keep track of others or to steal some of their technology. ... Encounter alien races. ... Will it be yours? ... Keep your worlds and starships up-to-date with your latest technologies.
http://www.apezone.com/install/stundemo.exe - 3Mb - Download - Screenshot

3D Alien Plasma Tunnels ScreenSaver
Friendly Aliens use different ways to communicate with the human. Alien Plasma Tunnels 3D screensaver is a new alien-assisted technology aimed to inspire us to be even more creative, cheerful, well-wishing and highly successful in our everyday life. While we enjoy the fascinating feeling of...
http://7art-screensavers.com/files/AlienPlasma3DInst.exe - 10Mb - Download - Screenshot

Crusaders Of Space: Open Range
Just when you thought the alien invasion was successfully fought off once and for all, new waves of alien scum come in numbers far greater then 5 years ago. The government is alarmed. An abstract from an official intelligence report: Our satellites have located as many as fifty alien... Or will all humans be enslaved by an alien civilization that came from a far away galaxy? ... Who is going to win this time? ... Will the humanity be able to form a force capable of stopping the attackers? ... Looks like we should start a search for a new hero right now!
http://www.alawar.com/submit/CosOR.exe - 13Mb - Download - Screenshot