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

• Start With Some Gold
  VVOGUOSE
• First Pupil Gives You More Gold
  NYVSPZGV
• Magic Doesn’t Use Up M.P.
  SXNOVXSE
• Immune To Poison
  AASVVNYA
• Immune To Paralysis
  AEKTSNYA
• Stronger Poison
  TEOTVYGA
• Weaker Poison
  ZEOTVYGA
• Don’t Get Charged For Boarding At Inn
  SZUOIVSE
  SZKPLVSE
• Don’t Get Charged For Items In Shops
  SXVPUOSE
  SXVOOOSE
• Start A New Game With $65 280
  VEOGUOSE
• Need 286 Experience For Level 2
  VVAGNO
• Only Need One Experience For Level 2
  VVAGXO
• Start New Game With The Sword of Wind
  VVZGXO
• Start New Game With The Tanned Hide
  VVZGSO
• Start New Game With The Carapace Shield
  VVZKEO
• Start New Game With The Spell Refresh
  VVZKUO
• Start New Game With 255 Magic Points
  VESGUOSE
• Start With 93 Attack Points, Then After You Get The Sword, You Have 42 Attack Points
  NYZGPA
• Start With 80-1 Defence Points
  NYZGIA
• You Are Black
  NYTGPA
• First Pupil Gives You 0 Gold
  AAVSPZGT
• Need 286 Experience Points For Level 2
  VVAGNO
• Walkthrough Monsters
  PSZAUN
• 1-Hit Kills Monsters Not Bosses
  YNZAUN
• Long Distance Hits
  NYUKYU
• Sword of Wind Is Much Stronger
  AOSAULPA
• When You Are Bare Handed (No Armor Equipped), Your Armor Defense Will Be Increased By 14
  TEKAELAE
• When You Are Bare Handed (No Armor Equipped), Your Armor Defense Will Be Increased By 32
  AXKAELAA
• When You Are Bare Handed (No Shield Equipped), Your Shield Defense Will Be Increased By 12
  GEKEOLAE
• When You Are Bare Handed (No Shield Equipped), Your Shield Defense Will Be Increased By 32
  AXKEOLAA
• Attack/Defense MUCH Stronger
  SAUAGA
• Start Game With Flight Spell And Warrior Ring
  STAEGA
  Note: Enter this code before starting a new game. The title screen and all subsequent screens will be glitched, but ignore this. As soon as you can, use the controller warp to go to Brynmaer, but DON’T TALK TO ANYONE until you get there. In Brynmear, speak to the woman who’s walking near the tavern entrance and she should give you the flight spell! Now, warp to the castle where the man is who has the Warrior Ring and Speak to him. He should give you the ring. If he doesn’t, then go outside, speak to the woman walking beside his house, and try again.
• Earn 256+ Experience Points Per Kill
  AASOAZLA
• Earn 8192+ Experience Points Per Kill
  AIKOTZAL
  GASOTZAA
• Earn 32768+ Experience Points Per Kill
  AIKOTZAL
  APSOTZAA
  Note: This code stops working at Level 14.
• Fixes A Bug With The First Pupil
  LANIGZZA
  Note: This code fixes a bug where the first pupil would take gold from you if you had more than 156 gold when you first meet instead of adding 100 to your gold.
• No Damage From Monsters
  SLOPAKSO
• No Damage From Poison
  SXOVKNSE
• Infinite Telepathy Magic
  SXEELOSE
• Walk Thru Walls
  AEKOUPTA