User Twelfth

120 votes

Accepted

Could a planet made completely of water exist?

answered Dec 4, 2014 at 20:58

68 votes

How do I protect my shop from teleporters?

magic teleportation security

answered Aug 12, 2016 at 16:41

67 votes

Accepted

How to build a city surrounded by giant spiders?

cities medieval insectoid

answered Apr 7, 2015 at 19:07

64 votes

In what war would one modern military vehicle make a difference?

warfare history

answered Mar 18, 2015 at 20:37

38 votes

Accepted

How could Medieval cultures defend themselves against dragons?

medieval dragons

answered May 7, 2015 at 20:34

35 votes

Accepted

How to knock down humanity?

science-based humans apocalypse post-apocalypse civilization

answered Aug 15, 2016 at 22:45

34 votes

Accepted

What advantages would bovines have over horses when used as cavalry?

warfare culture fauna mounts

answered Dec 18, 2014 at 19:54

34 votes

In a world of magic, why would cities still find high walls useful?

magic warfare cities military-defense

answered Oct 22, 2014 at 22:38

26 votes

How would rogue planet civilization track the passage of time?

time rogue-planets time-keeping

answered Oct 14, 2014 at 19:21

25 votes

Accepted

How long can a medieval siege last?

medieval strategy tactics

answered May 11, 2015 at 16:44

24 votes

What single change would have given the best chance for the Allies to win the Battle of France in early WWII

science-based warfare alternate-history

answered Feb 1, 2018 at 18:47

23 votes

What would be the first thing humans would mine on Jupiter?

science-based economy space-colonization solar-system gas-giants

answered Sep 2, 2016 at 18:01

22 votes

Accepted

How realistic are living creatures whose skin burns when exposed to light?

reality-check creature-design

answered Aug 8, 2016 at 22:25

22 votes

Accepted

Would Elephant Bird Light Cavalry be feasible?

reality-check warfare fauna domestication

answered Aug 9, 2016 at 17:40

22 votes

Accepted

Exclamations in a nonreligious culture

language

answered Feb 12, 2015 at 0:16

21 votes

Accepted

What is the likely method of surviving a Tsunami in a city?

science-based reality-check apocalypse weather

answered Oct 3, 2014 at 18:37

21 votes

How can I kill every human on earth?

apocalypse humans population

answered Nov 25, 2014 at 0:13

20 votes

Accepted

Convergent Eye Structure in Aliens?

reality-check creature-design senses

answered Dec 8, 2017 at 16:37

18 votes

How do I encourage fully armored knights to carry a shield

magic warfare armors

answered Feb 16, 2015 at 21:00

18 votes

What computational resources would work for a 550-year climate forecast of our earth?

science-based climate earth population worldbuilding-resources

answered Feb 17, 2015 at 0:05

17 votes

Accepted

Creating a realistic world map - Erosion

science-based geography climate erosion

answered Oct 6, 2014 at 23:08

17 votes

Anatomically Correct Sleipnir

science-based reality-check evolution mythical-creatures mythology

answered Jul 28, 2016 at 19:44

17 votes

Economic reasons to put people on Mars?

science-based space economy space-colonization mars

answered Aug 23, 2016 at 17:53

16 votes

How long would it take to remove all trace of a civilisation, with malice and intent?

civilization alternate-history

answered Nov 24, 2014 at 18:51

15 votes

How can an unimaginably huge life form reliably communicate with mortals?

science-based communication interspecies-relations

answered Mar 27, 2017 at 22:01

15 votes

Accepted

Would a war between superhoeroes last longer than a war between humans?

society warfare super-powers

answered Nov 25, 2014 at 20:05

15 votes

Accepted

What technology is required to detect an underground civilization?

reality-check technology underground hollow-earth

answered Nov 13, 2014 at 20:38

15 votes

Accepted

What would an ammonia-based world look like?

science-based planets geography

answered Oct 24, 2014 at 22:11

15 votes

Accepted

How would one weaponize a black hole?

science-based reality-check space warfare black-holes

answered Mar 12, 2015 at 17:43

14 votes

What would be the most effective melee weapon against heavily armored opponent?

reality-check science-fiction weapons combat melee

answered Aug 25, 2016 at 16:51

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325 Answers

Could a planet made completely of water exist?

How do I protect my shop from teleporters?

How to build a city surrounded by giant spiders?

In what war would one modern military vehicle make a difference?

How could Medieval cultures defend themselves against dragons?

How to knock down humanity?

What advantages would bovines have over horses when used as cavalry?

In a world of magic, why would cities still find high walls useful?

How would rogue planet civilization track the passage of time?

How long can a medieval siege last?

What single change would have given the best chance for the Allies to win the Battle of France in early WWII

What would be the first thing humans would mine on Jupiter?

How realistic are living creatures whose skin burns when exposed to light?

Would Elephant Bird Light Cavalry be feasible?

Exclamations in a nonreligious culture

What is the likely method of surviving a Tsunami in a city?

How can I kill every human on earth?

Convergent Eye Structure in Aliens?

How do I encourage fully armored knights to carry a shield

What computational resources would work for a 550-year climate forecast of our earth?

Creating a realistic world map - Erosion

Anatomically Correct Sleipnir

Economic reasons to put people on Mars?

How long would it take to remove all trace of a civilisation, with malice and intent?

How can an unimaginably huge life form reliably communicate with mortals?

Would a war between superhoeroes last longer than a war between humans?

What technology is required to detect an underground civilization?

What would an ammonia-based world look like?

How would one weaponize a black hole?

What would be the most effective melee weapon against heavily armored opponent?