[DeathArrow]

You've played DOOM?

[nailer]

A lot of people don’t realise this but there’s a new made by the Wolfenstein 3D people.

It has up and down AND walls can be at different angles!

You’re a space marine and fight demons.

[867-5309]

on Windows .. as Administrator

[someweirdperson]

The headline is probably wrong. Most likely, Deimos is a well-known moon, only second to Luna. Maybe tied with Phobos.

[Symmetry]

I bet the Galilean Moons of Jupiter are known to more people but yeah, Mars's are relatively well known.