Here are some cheats and tips for the game Amagon.
AAXGNYPA Start with infinite lives
PEOVIZGA Start with 1 life
AEOVIZGE Start with 8 lives
GZSZIZSP Infinite mega-power
PEOVPZGA Start with no bullets!
YEOVPZGA Start with 600 bullets
AAVYLTPA Start with infinite bullets
PAVKUIZA Gain 10 bullets on pick-up
LAVKUIZA Gain 30 bullets on pick-up