Update 0.76 will come with a new feature; The Battle Zone.
Available from the tower north of Portus City,
the Battle Zone is a 12 floor tower that has a random pokemon battle on each floor.
Battle and obtain "Zone Points" which you can spend in the Prize Zone to get rare items.
Reach the top floor for a bonus prize.
The Prize Zone is also connected to the Arcade Zone,
where you can also obtain Zone Points.