Kingdom Hearts 3 Post Game and End Game
Battle Through All the Battle Gates
After you beat Kingdom Hearts 3, you’ll unlock 14 different Battle Gates scattered across all the different worlds. These gates appear as blue orbs, and they contain some of the toughest battles in the entire game.
You’ll face hordes of enemies and even some unique ones that only appear in the gates, like the Sorcerer and Berserker Nobodies from previous games. The Battle Gates give you a ton of experience, so it’s a great way to grind to level 99.
On top of that each one will reward you with a powerful accessory, and a Secret Report. There are 13 reports in all, and each one provides additional context to the backstory of Kingdom Hearts 3, and certain characters.
Battle Gates are certainly the main piece of end game content you’ll be taking on.