Your Kata (Ruby version) needs more extensive test coverage to prevent easy cheap-cheat solutions and/or logically flawed solutions. The most common way to increase test coverage is through the inclusion of randomly generated test cases at runtime so please add these. The lack of test coverage in a Kata as an Issue is recognised as an official CW stance.

There are literally no instructions. You have to look at the tests to discern how to write the solution.

Nice kata, that was fun, thanks.

JS translation kumited.

(random tests added)
more info on how to approve it ( or not )

Hello, welcome on CodeWars.

Why is secret_map an array of arrays , eg why . . .

[
  ["spain"], [], [], [], [], [],    [], [], [], [], [], [],   [], [], ["pirate"], ["pirate"], [], [],
  [], [], [], [], ["pirate"], [],   [], [], [], [], [], [],   [], [], [], ["pile_of_gold"], [], [],
]

. . . instead of . . .

[  "spain",,,,,,   ,,,,,,   ,,"pirate","pirate",,,   ,,,,"pirate",,   ,,,,,,   ,,,"pile_of_gold",,, ]

?