Procedurally generated dungeons appear across the world. Step through a portal as your Pokémon, battle through floors of increasingly tough enemies, and claim rewards no surface explorer will ever see.

From portal to loot, here's what a dungeon run looks like.
Dungeon Portals spawn randomly across the world. Keep your eyes open while exploring when you find one, you've found your way in.
Only Pokémon can pass through a Dungeon Portal. You'll take direct control of your chosen Pokémon and fight your way through every floor.
Dungeons are home to Pokémon that can't be found anywhere else in the overworld. If you want to catch them all, you'll need to go deep.
Clear floors and defeat bosses to earn valuable loot. Among the rewards: Dungeon Keys rare drops that unlock something far more dangerous.
Collect enough Dungeon Keys and you'll gain access to the Ancient Gateway, a passage to far more challenging dungeons with stronger enemies, tougher bosses, and greater stakes.
Only the most skilled trainers will survive these depths. But the reward is worth the risk: Ancient Gateway dungeons may hold Legendary Pokémon that cannot be obtained any other way.
Find a portal. Choose your Pokémon. Dive in. Every dungeon is different and only the brave will reach the Ancient Gateway.