Its not a hack, but thank you I was already thinking about that name eaven before X Y were announced so its not really following a trend.
Anyway I've just finished maping a first of many caves you'll encounter on your adventure.
(Some things in the cave have been changed I just haven't updated the image jet)
And another ingame image of the cave
None of those tiles are public except the ones you'll find on dA by ultimospriter.