The following are known Game Genie Codes for Cliffhanger on SEGA Game Gear.

• Start With 2 Lives
  011 98E E62
• Start With 5 Lives
  041 98E E62
• Start With 10 Lives
  091 98E E62
• Infinite Lives
  012 73E B39
• Start With 1 Energy Bar
  011 A3E A2A
• Start With 5 Energy Bars
  051 A3E A2A
• One Hit Kills
  018 9AE B39
• 1 Continue
  011 80E E66
• 5 Continues
  051 80E E66
• 9 Continues
  091 80E E66
• Invincibility
  C90 C6A E69
• Start On Level 2
  031 85E E6A
• Start On Level 3
  061 85E E6A
• Start On Level 4
  081 85E E6A