Zen the Intergalactic Ninja (NES 1991) Game Genie Codes

Zen the Intergalactic Ninja @ Wikipedia

ZAELNGIE - 9 lives allowed in 'options'
GZNLYUSE - Infinite energy
NYNXVTOE - Slower timer
YTNXVTOE - Faster timer
YINXVTOE - Even faster timer
AEUAOLGE - Zen does increased damage--isometric stages
GOUAOLGA - Zen does mega damage--isometric stages
AAKXUIGE - Jab attack does more damage--horizontal stages
GPKXUIGA - Mega jab attack damage--horizontal stages
SZSPGTVG + SZOZYTVG - Infinite lives
PAEUGGLA + PAXUNTLA - Fewer hits in shield
TAEUGGLA + TAXUNTLA - Double hits in shield
PAEUGGLE + PAXUNTLE - Triple hits in shield