Give me some cool planet ideas.

>>54456509
What if it's a city of a thousands planets.

>>54456530
What if it's a planet with a thousand cities?

>>54456509
An ice planet

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>>54456509
Rare into the extreme, a planet through natural geological processes moving the necessary minerals about the core has inexplicably created a vast, self-aware supercomputer. The minerals and ores mined from this world are not only of an unusually high-quality, they contain shards of the Planet's own intelligence, such that any "moving machine" will have a will and "spirit" of it's own.

The planet shifts planes of existences every few hours. There's a ring around the planet that if you stand there when the limit is up then the plane changes. It also changes when you are in space since that oddly stays consistent. The inhabitants know about the dimensional shift and it started with one world sending spies and sabotaging the other from behind the shadows to exploit their resources. This was until the other found out and all out war came about. The inhabitants of one plane cannot live long in the other so their acts are mostly proxy war, espionage, sabotage, and terrorism. You come in and both planes are already in bad shape and recovering with deep fear and hatred for the people on the other plane.

>>54456509
A tidally locked planet that is kind of like earth, if it stopped spinning. The area with eternal day is very hot and dry. The night-side is very cold with frozen oceans. The belts inbetween where dawn and dusk are are the most comfortable regions for human visitors, and feature the vast majority of the planet's life and ecosystem exists.

That's not to say that there isn't presence of life in day and night zones, but that which does eke out survival in the extreme hot or cold is either incredibly tough and resourceful, or incredibly clever.

>>54456509
A rogue planet that drifts through galaxy without a sun, flung out of orbit some time ago (this actually is a pretty common occurrence).

Life has adapted to continue to survive here, either due to volcanic activity still providing plenty of heat and energy, or it is mostly dead, but the intelligent alien race that live here was advanced enough to figure out ways to keep its civilization alive and running.

Perhaps they are currently trying to figure out how to create a small, artificial sun, which would orbit their planet and allow them to begin to fully rejuvenate with terraforming.

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>>54456530

>>54456509
A planet that is actually a cluster of a failed alien super-structure from some ancient Type II civilization, now in ruin. Maybe the different races have started to find out about it and are racing to harvest it for its advanced materials and tech.

>>54456509
The planet of razor glass winds.

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>>54456509
A planet where everyone is kinda stuck in the middle ages and stupide and rubs shit all over themselves. The players need to find some scientists who were trying to enlighten the civilization but have given up and are now starting to be a shit smearing embarrassment too. The planet may have some sort of cultural infection that turns everyone into shit smearing idiorts. What do?

The origin race died out, but the machines they made already reached mechanical singularity. They worship their precursors like gods.

>>54457989
Imperium?

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>>54458059
Its what I remember about the movie Hard to be God, but I fell asleep halfway through.

Matrioshka Brain with more virtual people than there are atoms in the entire universe.

>>54457463
Would make more sense to build the sun inside the core of their planet

that way they keep the energy instead of sending it off into space

>>54456509
Low gravity and a dense, oxygen rich atmosphere lead to naturally occurring dragons and angels.

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>>54458149

http://terraforming.wikia.com/wiki/Habitable_Zone

>>54458218
That's called a Dyson Sphere.

>>54457488
where does "Killjoys" fit in, or is it not really true sci-fi and more action-y

>>54458337
That doesn't actually mention any remotely habitable planet, apart from perhaps rogue planets which the link misspells "rough planets". The rest of the page seems like a summary of the stellar classification wikipedia article, which is in my opinion far more interesting and in-depth.

>>54460029

If you open the links to each class of stars, it describes what kind of planet could be habitable or be terraformed in such star. The bigger ones last too short for life to evolve naturally, but can still be colonized.