The following are known Game Genie Codes for Goonies II on Nintendo Entertainment System (NES).

• PAXSZGLA
  Start with 1 life
• TAXSZGLA
  Start with 6 lives
• PAXSZGLE
  Start with 9 lives
• SZUGUYVG
  Infinite lives
• IAVIAGPA
  Start with the Boomerang
• LEUAOPZA
  Always have Mega-Jump
• IEUEKPGA
  Better Jumping Boots on pick-up
• ZESAPAPA
  Super speed
• SXUASSVK
  Infinite Bombs on pick-up
• SZVAESVK
  Infinite Molotov Bombs on pick-up
• SZNEEVVK
  Infinite shots for Sling on pick-up
• GAUIZGZA + AGUIYGAZ
  Start with 4 Energy cells
• AAUIZGZE + EAUIYGAZ
  Start with 8 Energy Cells