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

• Start With 0 Drops Allowed
  PAVESGLA
• Start With 5 Drops Allowed
  IAVESGLA
• When Starting On Level 6: 0 Drops Allowed
  PANENGGA
• When Starting On Level 6: 5 Drops Allowed
  IANENGGA
• When Starting On Level 11: 0 Drops Allowed
  PEOAXGIA
• When Starting On Level 11: 3 Drops Allowed
  LEOAXGIA
• Infinite Drops
  SXXLUGVT