Type these when it asks for passcodes.
"GOATY" - Invincibility
"INCAS" - Replaces inviso with smart laser in stargate
"ANDES" - Power is restored when the laser is fired
"RAVEN" - Activates the three following keys
"I" - Invicibility on/off
"N" - Next level
"D" - Fly auto pilot 23 levels
01-"START" | 17-"LEMAC" | 33-"MAGOG" | 53-"IRATA"
05-"FLOYD" | 21-"ZIPPO" | 37-"FUNKY" | 57-"NEURO"
09-"FURRY" | 25-"LASER" | 41-"DONKY" | 61-"STOAT"
13-"BEAST" | 29-"DAFAD" | 49-"KANJI"