The current Dimian Battle Tower is another fairly straightforward battle facility much like the Battle Hall, but with a twist: It functions on "Nuzlocke Rules", in that if a Pokemon faints at any time during a battle, they can not be used again for the duration of the challenge. Battles taking place during the Silver Challenge are in Singles format, whereas Gold Challenge battles are Doubles.
The top trainer (both literally and figuratively) at the Battle Tower holds the title of Tower Keeper; this is either Bella (in Iron and Patina Versions) or Lexa (in Copper).