Board Thread:Questions and Answers/@comment-4441317-20170123203358/@comment-24053170-20170124030500

Compass Sense wouldn't really help you on some planes of existence, as the rules for directions might not even exist or they could be so radically different as to make the ability useless.

There are some planes of existence in AD&D that don't even have any directions, which would make the power useless.

And there are some worlds in the Warhammer 40k verse that directions are so different that not only are compasses completely useless, but they can make you go in the opposite direction you started traveling, for example you could start walking up a hill only to realize your actually heading down it instead.