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

• 1 Life For Player 1
  PEEAPZGA
• 1 Life For Player 2
  PEEEAZGA
• Start On Level 5, Player 1 Game
  IANAZZPA
• Start On Level 10, Player 1 Game
  ZANAZZPE
• Start On Level 20, Player 1 Game
  GPNAZZPA
• Start On Level 5, Player 2 Game
  IEEEGZPA
• Start On Level 10, Player 2 Game
  ZEEEGZPE
• Start On Level 20, Player 2 Game
  GOEEGZPA
• Infinite Lives
  OZOEGYVK
• Infinite Lives
  SZOEGYVG
  SZSAGZVT