This table was put together with the help of a bunch of people on Google+ and in the RPG Brigade. Thanks for all the help. I hope to use this list in my next sci-fantasy RPG campaign. Enjoy.
1) Terraforming Base.
1) Terraforming Base.
2) Rotting carcass of a huge space monster.
3) Hollowed out moon.
4) Hollowed out asteroid.
5) Spacehulk.
6) Bunch of old spaceships jammed together.
7) Shattered world & moon with ruins from extinct culture.
8) Weird remote religious site.
9) Catacomb world (chuck yer dead here!)
10) Garbage world (megadungeons carved from garbage piles).
11) Government research space station.
12) Head of a god floating in the void (might still be living).
13) Migratory spore pods on their way to far off planets (Pantera Planet Caravan video) being eating from inside by big slug-like parasites.
14) Colony generational life ship that never made it to its destination.
15) Horticulture preserve kept living by solar powered robots and rotating around a dying sun.
16) Debris fields on the planets near a huge space battle (parts of ships and survivors).
17) Self-contained megacities that fled their dying world.
18) Giant wasp-like hive structure of extinct insectoid alien species floating through space.
19) Deathcube in orbit around a heavily populated world, designed to kill off the worst of the population for entertainment purposes. It is filled with thousands of deadly moving rooms (Cube movies).
20) Space temple built entirely out of the bones of the dead blended with high tech glass.
21) Residential Arcologies.
22) Cyclopean ruins of ancient alien civilizations.
23) Ring World.
24) Transdimensional intelligent machine mazes.
24) Hive city on a remote world.
25) Paradise world built beneath the surface of the planet. The lower you go the more posh it is.
26) The root structure of the illusive Space Lotus.
27) Dyson sphere/ habitation ring.
28) Physical expanse that defies physics and geometry (extraplanar habitat).
29) Parallel planetary development world (like Earth but different).
30) Penal colony/moon.
31) Space dry dock.
32) Space truck stop / import and export site.
33) Temple world / massive holy site.
34) A giant cube filled with passageways based on non-Euclidean geometry. It carbon dates to a time before the big bang and may have been a life-boat for creatures trying to escape the destruction of the universe that was there before ours.
35) Deceased Crystalline Entity (Star Trek The Next Generation). Parts of it still course with saved energy that can be exploited, but leaching off this energy is difficult because randomly throughout the entire angular tube tunnels spikes of this energy often kill those wandering around inside of its crystal exoskeleton. It devoured all of the life on whole worlds to gain this stored energy... so there might be some consequences to taking and using it.
36) Dilapidated subway system in a space station / or ancient city.
37) Undercity that has been excavated and used as a secret base beneath some thriving metropolis.
38) Excrement / compost space barge that did not make it to the terraform destination. It crash landed into a moon.
39) Penal Colony that will be sucked into a black hole in XD6 years. No one has visited it or supplied it with food in many years.
40) Housing blocks stacked up and connected to each other by living alien flesh tubing that excretes oxygen and water. The tubing survives off of the flesh of the dead and excrement of the inhabitants.
41) Military World Destroyer Battlestation (Death Star).
42) Space Monster that has a star revolving around it. The enormous creature has many orifices that could be entered.
43) Hundreds of small ships fused together holding the remains of a lost intelligent species.
44) Desert world with thousands of huge tunnels carved beneath the surface by sand worms.
45) A lonely ancient and advanced living ship trying to kill itself by flying into a sun.
46) A small moon split in two that has two separate alien races battling each other for control of the whole destroyed moon. I picture them as red and black ant-like races with steampunk type weaponry. Clone tech lets them continue fighting indefinitely.
47) An artificial environment generated by very advanced aliens for their own twisted purposes. The environment is very different than that found on Earth and is inimical (hostile) to other species.
48) Android dump site where still operating robots have begun to excavate and live beneath the piles of broken parts.
49) Spaceship that looks like a robotic dragon that is being attacked by lots of small ships or other living things.
50) Giant robot heavily damaged from some old battle that is buried halfway in a moon.
51) A former artificial environment which has long been broken up into small sections, each section containing 1 to 5 rooms. All of these sections are floating freely from each other, only loosely staying close via gravity. There are empty gaps of space between each one. Every section has a short-range teleportation portal which takes you to another one, but it can be like a maze, the portals don't connect in a linear fashion anymore.
52) Monastery filled with depraved criminals (Alien 3).
53) Hidden genetic laboratory where the experiments have taken over and done things to the technicians. Some of those unlucky scientists are still alive.
54) High security space prison filled with the galaxy's worst offenders.
55) Abandoned mining site with new tenants.
56) Abandoned cloning facility with hundreds of slumbering clones.
57) Royal opera house space station that draws humanoids from far and wide to see their performances.
58) Expensive high security space mansion.
59) Recently bombed out spaceport.
60) Power plant with an unknown power source, perhaps extraplanar in origin.
61) Sacrificial mound and underlying catacombs all beneath an air-tight dome
62) Space shopping center / mall.
63) Insane asylum on a comet. A government agency loads it with new patients every time it comes near.
64) Expansive anechoic chambers (built to absorb all sound and it drives you mad).
65) Complex structure that is seemingly composed from light.
66) Human harvesting center run by aliens that sell parts a-la-cart to the highest bidder. It orbits a world with a high population.
67) Repository of knowledge from a forgotten alien species.
68) A slowly tumbling maze of undulating tubes and something is trapped within it that can't break free.
69) Mechanized reclamation and recycling plant for organic and inorganic matter.
70) Factory of enslaved workers.
71) A massive automatic factory that is harvesting power from a nearby natural source, and occasionally beams pulses of intense energy back towards its home world. It is filled with robotic machines for many chores including some anti-invader ones.
72) Microscopic (shrunken) aliens that have set up a station in a humanoid being. They mine the humanoid's bones for minerals, but the human is starting to shut down. Antibodies attack them like monsters would in a dungeon. Picture a human skeleton with dungeon levels dug out of the bones.
73) Slaving ship destined for a world to be terraformed.
74) "Elephant Graveyard" of some nearly extinct alien species that lived/lives on many worlds.
75) Location exactly like the one you just left from but it is an alternative history place that is vastly different than the other location.
76) A holodeck-like generated structure composed from the memories of everyone in an extinct culture.
77) A cyberpunk or perhaps hyper-sci-fi themed dive into the depths of a person's mind. Could use psychology profiles to generate a random dungeon based on personality disorders.
78) Beneath a colony on an asteroid or moon (could be abandoned but maybe not). There is a very intricate but broken down system of plumbing/sewers.
79) Space dragon being hunted down by other creatures/ships.
80) A zoo, full of varied environmental conditions for creatures from many different worlds.
81) A terraforming / colony ship that contains time periods over a planet's history.
82) A comet that was a remote base in times past. Find the center of the comet so you can use the magic/nuclear/fusion bomb to melt it from the inside before it hits your planet.
83) A probability machine is fracturing time, investigating each timeline, and attempting to alter events for its own benefit. Once it finds the "best" timeline all life will be extinguished. It dwells in a complex labyrinth of computer consoles and screens. The guys that designed it called themselves wizards.
84) A hyper cube where all rooms lead to different but similar rooms in a collapsing multiverse.
85) A massive collector vessel. Containing one of every living creature in the universe in suspended animation, perhaps unique oddities as well. Ship is full of androids and robots but nothing in is in charge. An alien "ark" type vessel ancient that never reached it's destination and has been drifting through the void for a millennium. Unique bio forms have grown upon the vessel over time as well as aliens that boarded and became stuck there.
86) Space gambling city (Las Vegas of the void).
87) Space pirate lair, asteroid retrofitted as a spaceship.
88) A cluster of massive balloons, each about a half-mile apart, floating in the upper atmosphere of a gas giant. They drift gently on the winds, but are tethered together by thin strong cables. A secret research station is where the balloons are tethered to.
89) Luxury resort spaceport that has been cut off of their supply lines due to space junk destroying their engines and stabilizers.
90) A large geometrically shaped vessel comes out of a black hole. There are silicon based life forms demanding something but no one can figure out their language or what they want. They seem to be slightly out of phase with this universe.
91) Two massive warships of two different races crashed into each other and drifted into the middle space between galaxies. They finally drifted into the edge of our galaxy. What do the aliens look like after tens of thousands of years. Interbreeding? What social structure has evolved?
92) A massive workshop for titan-sized aliens. The PCs are like Jack in the Beanstalk moving among massive crafting tools.
93) A Restaurant at the End of the Universe. They all have strange rituals about towels...
94) Demonic / extraplanar prison of summoned dark entities from paraspace.
95) A circular ship looking like the typical "flying saucer" enters the galaxy and heads right for your planet. All communications with the ship get one response in every known language and a million unknown. "The Seed is Here." The ship is full of massive androids and living metal beings. In the center is the "Seed" which appears to be a human woman in suspended animation. It is nearly impossible to navigate the portals to arrive at The Seed.
96) To escape genocide, inhabitants of a planet were forced to relocate to the rings surrounding their world. Cities exist on the largest chunks of rocks and ice in the rings, while smaller ones have tiny villages or even space-native species.
97) Old folks home in the stars. The inhabitants were sent there from a society that is obsessed with youth and their own vanity.
98) A being the size of the moon rides on top of a ship of twice that size. It does not seem to know how to operate the ship. The ship itself looks very old and traveling wherever it wants despite its rider's wishes.
99) A huge polyhedral shape that is an a sports arens for aliens (and PCs) to engage in all sorts of competitions, including zero gravity ones.
100) A derelict ship floating adrift containing 1000's of "dead: creatures except one is alive and she is very hungry. (Lifeforce movie).
3) Hollowed out moon.
4) Hollowed out asteroid.
5) Spacehulk.
6) Bunch of old spaceships jammed together.
7) Shattered world & moon with ruins from extinct culture.
8) Weird remote religious site.
9) Catacomb world (chuck yer dead here!)
10) Garbage world (megadungeons carved from garbage piles).
11) Government research space station.
12) Head of a god floating in the void (might still be living).
13) Migratory spore pods on their way to far off planets (Pantera Planet Caravan video) being eating from inside by big slug-like parasites.
14) Colony generational life ship that never made it to its destination.
15) Horticulture preserve kept living by solar powered robots and rotating around a dying sun.
16) Debris fields on the planets near a huge space battle (parts of ships and survivors).
17) Self-contained megacities that fled their dying world.
18) Giant wasp-like hive structure of extinct insectoid alien species floating through space.
19) Deathcube in orbit around a heavily populated world, designed to kill off the worst of the population for entertainment purposes. It is filled with thousands of deadly moving rooms (Cube movies).
20) Space temple built entirely out of the bones of the dead blended with high tech glass.
21) Residential Arcologies.
22) Cyclopean ruins of ancient alien civilizations.
23) Ring World.
24) Transdimensional intelligent machine mazes.
24) Hive city on a remote world.
25) Paradise world built beneath the surface of the planet. The lower you go the more posh it is.
26) The root structure of the illusive Space Lotus.
27) Dyson sphere/ habitation ring.
28) Physical expanse that defies physics and geometry (extraplanar habitat).
29) Parallel planetary development world (like Earth but different).
30) Penal colony/moon.
31) Space dry dock.
32) Space truck stop / import and export site.
33) Temple world / massive holy site.
34) A giant cube filled with passageways based on non-Euclidean geometry. It carbon dates to a time before the big bang and may have been a life-boat for creatures trying to escape the destruction of the universe that was there before ours.
35) Deceased Crystalline Entity (Star Trek The Next Generation). Parts of it still course with saved energy that can be exploited, but leaching off this energy is difficult because randomly throughout the entire angular tube tunnels spikes of this energy often kill those wandering around inside of its crystal exoskeleton. It devoured all of the life on whole worlds to gain this stored energy... so there might be some consequences to taking and using it.
36) Dilapidated subway system in a space station / or ancient city.
37) Undercity that has been excavated and used as a secret base beneath some thriving metropolis.
38) Excrement / compost space barge that did not make it to the terraform destination. It crash landed into a moon.
39) Penal Colony that will be sucked into a black hole in XD6 years. No one has visited it or supplied it with food in many years.
40) Housing blocks stacked up and connected to each other by living alien flesh tubing that excretes oxygen and water. The tubing survives off of the flesh of the dead and excrement of the inhabitants.
41) Military World Destroyer Battlestation (Death Star).
42) Space Monster that has a star revolving around it. The enormous creature has many orifices that could be entered.
43) Hundreds of small ships fused together holding the remains of a lost intelligent species.
44) Desert world with thousands of huge tunnels carved beneath the surface by sand worms.
45) A lonely ancient and advanced living ship trying to kill itself by flying into a sun.
46) A small moon split in two that has two separate alien races battling each other for control of the whole destroyed moon. I picture them as red and black ant-like races with steampunk type weaponry. Clone tech lets them continue fighting indefinitely.
47) An artificial environment generated by very advanced aliens for their own twisted purposes. The environment is very different than that found on Earth and is inimical (hostile) to other species.
48) Android dump site where still operating robots have begun to excavate and live beneath the piles of broken parts.
49) Spaceship that looks like a robotic dragon that is being attacked by lots of small ships or other living things.
50) Giant robot heavily damaged from some old battle that is buried halfway in a moon.
51) A former artificial environment which has long been broken up into small sections, each section containing 1 to 5 rooms. All of these sections are floating freely from each other, only loosely staying close via gravity. There are empty gaps of space between each one. Every section has a short-range teleportation portal which takes you to another one, but it can be like a maze, the portals don't connect in a linear fashion anymore.
52) Monastery filled with depraved criminals (Alien 3).
53) Hidden genetic laboratory where the experiments have taken over and done things to the technicians. Some of those unlucky scientists are still alive.
54) High security space prison filled with the galaxy's worst offenders.
55) Abandoned mining site with new tenants.
56) Abandoned cloning facility with hundreds of slumbering clones.
57) Royal opera house space station that draws humanoids from far and wide to see their performances.
58) Expensive high security space mansion.
59) Recently bombed out spaceport.
60) Power plant with an unknown power source, perhaps extraplanar in origin.
61) Sacrificial mound and underlying catacombs all beneath an air-tight dome
62) Space shopping center / mall.
63) Insane asylum on a comet. A government agency loads it with new patients every time it comes near.
64) Expansive anechoic chambers (built to absorb all sound and it drives you mad).
65) Complex structure that is seemingly composed from light.
66) Human harvesting center run by aliens that sell parts a-la-cart to the highest bidder. It orbits a world with a high population.
67) Repository of knowledge from a forgotten alien species.
68) A slowly tumbling maze of undulating tubes and something is trapped within it that can't break free.
69) Mechanized reclamation and recycling plant for organic and inorganic matter.
70) Factory of enslaved workers.
71) A massive automatic factory that is harvesting power from a nearby natural source, and occasionally beams pulses of intense energy back towards its home world. It is filled with robotic machines for many chores including some anti-invader ones.
72) Microscopic (shrunken) aliens that have set up a station in a humanoid being. They mine the humanoid's bones for minerals, but the human is starting to shut down. Antibodies attack them like monsters would in a dungeon. Picture a human skeleton with dungeon levels dug out of the bones.
73) Slaving ship destined for a world to be terraformed.
74) "Elephant Graveyard" of some nearly extinct alien species that lived/lives on many worlds.
75) Location exactly like the one you just left from but it is an alternative history place that is vastly different than the other location.
76) A holodeck-like generated structure composed from the memories of everyone in an extinct culture.
77) A cyberpunk or perhaps hyper-sci-fi themed dive into the depths of a person's mind. Could use psychology profiles to generate a random dungeon based on personality disorders.
78) Beneath a colony on an asteroid or moon (could be abandoned but maybe not). There is a very intricate but broken down system of plumbing/sewers.
79) Space dragon being hunted down by other creatures/ships.
80) A zoo, full of varied environmental conditions for creatures from many different worlds.
81) A terraforming / colony ship that contains time periods over a planet's history.
82) A comet that was a remote base in times past. Find the center of the comet so you can use the magic/nuclear/fusion bomb to melt it from the inside before it hits your planet.
83) A probability machine is fracturing time, investigating each timeline, and attempting to alter events for its own benefit. Once it finds the "best" timeline all life will be extinguished. It dwells in a complex labyrinth of computer consoles and screens. The guys that designed it called themselves wizards.
84) A hyper cube where all rooms lead to different but similar rooms in a collapsing multiverse.
85) A massive collector vessel. Containing one of every living creature in the universe in suspended animation, perhaps unique oddities as well. Ship is full of androids and robots but nothing in is in charge. An alien "ark" type vessel ancient that never reached it's destination and has been drifting through the void for a millennium. Unique bio forms have grown upon the vessel over time as well as aliens that boarded and became stuck there.
86) Space gambling city (Las Vegas of the void).
87) Space pirate lair, asteroid retrofitted as a spaceship.
88) A cluster of massive balloons, each about a half-mile apart, floating in the upper atmosphere of a gas giant. They drift gently on the winds, but are tethered together by thin strong cables. A secret research station is where the balloons are tethered to.
89) Luxury resort spaceport that has been cut off of their supply lines due to space junk destroying their engines and stabilizers.
90) A large geometrically shaped vessel comes out of a black hole. There are silicon based life forms demanding something but no one can figure out their language or what they want. They seem to be slightly out of phase with this universe.
91) Two massive warships of two different races crashed into each other and drifted into the middle space between galaxies. They finally drifted into the edge of our galaxy. What do the aliens look like after tens of thousands of years. Interbreeding? What social structure has evolved?
92) A massive workshop for titan-sized aliens. The PCs are like Jack in the Beanstalk moving among massive crafting tools.
93) A Restaurant at the End of the Universe. They all have strange rituals about towels...
94) Demonic / extraplanar prison of summoned dark entities from paraspace.
95) A circular ship looking like the typical "flying saucer" enters the galaxy and heads right for your planet. All communications with the ship get one response in every known language and a million unknown. "The Seed is Here." The ship is full of massive androids and living metal beings. In the center is the "Seed" which appears to be a human woman in suspended animation. It is nearly impossible to navigate the portals to arrive at The Seed.
96) To escape genocide, inhabitants of a planet were forced to relocate to the rings surrounding their world. Cities exist on the largest chunks of rocks and ice in the rings, while smaller ones have tiny villages or even space-native species.
97) Old folks home in the stars. The inhabitants were sent there from a society that is obsessed with youth and their own vanity.
98) A being the size of the moon rides on top of a ship of twice that size. It does not seem to know how to operate the ship. The ship itself looks very old and traveling wherever it wants despite its rider's wishes.
99) A huge polyhedral shape that is an a sports arens for aliens (and PCs) to engage in all sorts of competitions, including zero gravity ones.
100) A derelict ship floating adrift containing 1000's of "dead: creatures except one is alive and she is very hungry. (Lifeforce movie).
