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

• Wacky Shadow Ball
  EATZZZ
• Don’t Hit The Ball
  GEAZZZ
• The Ball Is Gone
  ZOOZZZ
• Extremely Easy Mode
  POTZZZ
• CPU Is Really Messed Up In The Head
  KEPKKK
• Everyone Is Drunk
  APOZYY
• Cool Colors
  APKSXX
• Cool Colors 2
  EGKSXX
• Game Resets Or Crashes When Switching Sides
  PISANT
• Fun With The Fielders
  IIZXLL
• Fielders Usually Can’t Get The Ball
  EISXXN
• Lots Of Weird Stuff
  PUKEON