Final Fantasy XV – “Castlemark Tower” Solved and Sword of the Tall
The Castlemark Tower has probably one the most confusing puzzles in the game and can easily be frustrating if you don’t know how the Catlemark Tower works. At the end of the dungeon, you will face the final boss and get the “Sword of the Tall” Royal Arm.
YOUTUBE PLAYLISTS (Final Fantasy XV)
Faithful Heir Achievement / Trophy
Collected thirteen royal arms
Here’s the timecode if you have trouble with a specific part of the “Castlemark Tower”:
IMPORTANT: Castlemark Dungeon is only accessable at night
When you enter the dungeon you have to make your way through the straight forward path (for the most part) and reach the main cube room, that has blue lights on the walls and floor.
MAIN CUBE ROOM:
First, look at every cube in each corner and see which one you can interact with. (The cube in the South West is always the last and leads to the boss). In order to interact with the last cube SW, you have to make it through the other 3 cubes, that lead to increasingly difficult boss fights.
After Defeating the bosses for each cube, come back to the main cube room you started and find the next one you can interact with.
FINAL CUBE IN THE SOUTH WEST:
After completing all 3 cube puzzles and beating the bosses, you can interact with the last cube that leads to Jabberwock, a lvl 58 boss.
After finishing him, you will get the Royal Arm “Sword of the Tall” from the Castlemark Tower.