Don't Run on Phobos

[Chipchase]

Seeing how many WADs are supposed to be on Phobus, just a warning not to run :-

 

http://www.sciencemag.org/news/2018/11/anything-faster-brisk-walk-martian-moon-could-send-you-spinning-space

[FractalBeast]

Well, it's a good thing that Doomguy can't jump in that case.

[Dark Pulse]

So THAT'S why it was called "Phobos Anomaly." How else could you avoid flying off into space on E1M8 if it weren't one?

[VanaheimRanger]

I'm pretty sure the first Doom novel mentions this.  Something about hitting a pothole in a rover could send you flying into space.