Underground

Description
The Underground is unlocked when you purchase the Explorer Kit located in Cinnabar Island Shop. It also has its own currency called Diamonds that can be used to purchase upgrades for the Underground or Masterball at the Pokémon League. For more information about the Underground, open it by clicking on it after you purchased the Explorer Kit and click on the Help tab.

Efficiency


To find Underground items most efficiently, use the chisel to mine the green tiles first, followed by yellow, then red.

Items will never spawn in the outermost row of tiles, so they should be avoided.