- Collect 1 Gun Power-Up & Get Max
00F-5FF-E69
04F-5EF-C43
3EF-5DF-082 - Collect 1 Thrust for Maximum Speed
00F-74F-E69
03F-73F-C4F
3EF-72F-082 - Keep Power-Ups After Dying
00F-E1E-19E - Infinite Lives
00F-F2E-19E - Start With 1 Life
014-43F-E66 - Start With 5 Lives
054-43F-E66 - Start With 7 Lives
074-43F-E66
Halley Wars - Game Genie Codes
The following are known Game Genie Codes for Halley Wars on SEGA Game Gear.
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