These codes may not work on some copies of the game.

PEVLYAIA Start with 1 life
ZEVLYAIE Start with 10 lives
SXEZXZVG Infinite lives
SXEUPUVK Infinite time
ZANLVKPO Start with 10 horizontal torpedoes
ZLNLVKPP Start with 50 horizontal torpedoes
LTNLVKPP Start with 99 horizontal torpedoes
IANUUKYA Start with 5 vertical torpedoes
ZLNUUKYA Start with 50 vertical torpedoes
LTNUUKYA Start with 99 vertical torpedoes
IEELSKZA Start with 5 caterpillars
ZUELSKZA Start with 50 caterpillars
LVELSKZA Start with 99 caterpillars
IEEUXKZA Start with 5 ECM's
ZUEUXKZA Start with 50 ECM's
LVEUXKZA Start with 99 ECM's
SXUXYSVK Infinite horizontal torpedoes
SZUZPVVK Infinite vertical torpedoes
OZEUEKOK + AAEUVGPA Gain maximum power horizontal torpedoes on pick-up
OZSLNKOK + AASUSGPA Gain maximum power vertical torpedoes, on pick-up