Solar System-817.4.IA-8: Alien Solar System Overrun by an Invasive Species

This solar system (far from Earth) was inhabited by an advanced non-human civilization. They possessed technology that permitted them to traverse the planets orbiting their star at speed, although they had yet to establish a major presence on any extra-solar world. Their fleets of ships propelled their civilization to the cusp of greatness. A critical …

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Earth-805.2.KA-2: Knights vs. Aliens

In the time before the Arrival, small kingdoms laid siege to each other in violent wars, pitting rams and catapults against castles and the lines of horseback soldiers that defended them. Their acts of factional destruction kept them divided, focused on piety and allegiance rather than what they could accomplish together. Earth forever changed when …

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Solar System-177.2.LF-2: A System of Planets Scorched by Capricious Sun Beings

Although there are two habitable planets in this solar system, the only life that is sentient is actually found on the star they orbit.  Its surface is alive with regular flares of magnetic and coronal activity, where strange supernatural life has emerged on its own in the plasma plains of the surface. As commonly happens …

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World-817.3.DL-66: A Planet Under Attack from Aliens Who Wield Laser Dragons

Unlike the dragons of other worlds, the dragons of this one are eyeless (relying on echolocation and smell), lack front legs, and have finned tails.  They are roughly the size of battle tanks or battleships, and they fly with slow manta-ray like speeds (though they can accelerate for quick dashes if need be).  Despite being …

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Galaxy-608.3.DP-7: A Constellation of Star Systems Under the Rule of Dragons

The dominant species of this galaxy are dragons.  Though lacking any natural ability to breathe fire, they are intelligent and have front claws that function like hands, allowing for dexterous tool use.  This ingenuity, combined with their strength and size (four meters tall and with a five meter wingspan), made them the dominant technological power …

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World-667.4.RP-11: A War of Humans Exterminating Robots

Human beings wage an ongoing war against deadly self-replicating machines.  In this war between man and machine, however, humanity is the aggressor; they not only struck first, but they were originally a nation of mage-warriors who have begun adapting the technology of their foes into their armor.  Humanity will use its power to exterminate the …

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Local Cluster-907.7.CO-5: A Cluster of Galaxies Shaped by God-Like AI

At some point in some part of the universe, intelligent life made AI that reached singularity.  Those AI went on to artifice their own successor intelligence, which reached a higher singularity.  By the fifth iteration of this process beings capable of reshaping the universe on at least a galactic scale ascended into existence.  They became …

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Exoplanet-007.4.XN-6: An Alien Stone-Age Wilderness

The natives of this planet have four arms.  They live a primitive life, comparable to a stone age that has not yet mastered forging bronze.  At least one tribe has developed both domesticated mounts and the fashioning of copper weapons, and is fast becoming a major regional power. Much of the world is still untamed …

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Astrobiology, and Realistic Alien Design

Life on another planet may be very different from life familiar to us on Earth, but no matter where it lives, it must have the adaptations needed to survive in the environment it lives in. Consider the scientist in the picture here, looking into a hole in the ice at the arctic north. There is life underwater, in the cold and the dark, hanging upside down attached to frozen ice, which is quite alien and unfamiliar to most of us, and yet native to the Earth.