The following are known Game Genie Codes for Nobunaga’s Ambition on Nintendo Game Boy.

• 3EF-9FB-191
  Train samurais once and they have 100% skill level
• 4B1-5AA-2A2
  Start with 75 loyalty points
• 641-5AA-2A2
  Start with 100 loyalty points
• 321-56A-80E
  Start with 50 town value points
• 4B1-56A-80E
  Start with 75 town value points
• 641-56A-80E
  Start with 100 town value points
• 321-5CA-D56
  Start with 50 castle defense points
• 4B1-5CA-D56
  Start with 75 castle defense points
• 641-5CA-D56
  Start with 100 castle defense points
• 4B1-5BA-2A2
  Start with flood control level at 75
• 641-5BA-2A2
  Start with flood control level at 100
• 0AE-B6B-B3A + 0AE-B9B-E6A
  Start with 2,580 rice points
• 03E-B6B-B3A + 03E-B9B-E6A
  Start with 788 rice points
• 01E-B6B-B3A + 01E-B9B-E6A
  Start with 276 rice points
• 0AE-B6B-D56 + 0AE-B7B-E6A
  Start with 999 gold
• 3E5-7EA-191
  Attributes for Oda Nobunaga are 100% (They will still show their original values, answer no when asked if this is OK, then attributes will be 100%)