The following are known Game Genie Codes for Sub-Terrania on SEGA Genesis.

• Start On Level 2
  AK3B-GAHY
• Start On Level 3
  AP3B-GAHY
• Start On Level 4
  AV3B-GAHY
• Start On Level 5
  AZ3B-GAHY
• Start On Level 6
  A33B-GAHY
• Start On Level 7
  A73B-GAHY
• Start On Level 8
  BB3B-GAHY
• Start On Level 9
  BF3B-GAHY
• Enable Grid Mode (Can Scroll Around The Map)
  AK3B-GAHT
• View End Of Game
  A33B-GAHL
• Start With 1 Life
  AF3V-GABY
• Start With 2 Lives
  AK3V-GABY
• Start With 3 Lives
  AP3V-GABY
• Start With 4 Lives
  AV3V-GABY
• Start With 6 Lives
  A33V-GABY
• Start With 7 Lives
  A73V-GABY
• Start With 8 Lives
  BB3V-GABY
• Infinite Lives
  ADDT-JACE
• No Fuel Loss From Idling
  DVRB-CA46
• No Extra Fuel Loss From Flying Forward
  B5KA-RA8E
• No Extra Fuel Loss From Flying Backward
  B5KT-RA42
• Mega-Shot Recharges Immediately
  2B0T-MGLT
  BV0T-LA40
• Infinite Missiles
  SF3T-MEYJ
• Heal At 2X The Normal Speed
  TBRB-CCB4
• Heal At 4X The Normal Speed
  ABRB-CGB4
• Heal Very Quickly
  ABRB-DAB4
• Heal Almost Instantly
  AFRB-CAB2