Press ESC, type 7th and enter the Codes, after entering the code press Enter, Joey will say "Cool" if it worked.

a. ILOVEJOEY - 50 lives

b. GOLDENGUN - 500 bullets

c. OMNIJOEY - invincibility

d. URHOPELESS- obtain Special item

e. FATBOYCANTJUMP - enable fly mode

f. GIMMETIME - Set time to 10 minutes

MAKEAWISH = 10 extra lives

GIMMEAMMO = 10 extra bullets