Unlimited Lives:

     Step 1. Begin game play and reach the Craterscape level. Take the extra life located behind
     the pillar on the bridge at the start of the level. 
     Step 2. After the total number of lives has increased, press Start, Select, and use the "Quit"
     option. 
     Step 3. Select "Yes" to confirm to return to the title screen. 
     Step 4. Select the "Start" and "Continue current game" options to restart at the Craterscape
     level. Collect the extra life again from the pillar and repeat this process to accumulate as
     many lives as desired. 


Codes:
Code - Function

          Right Up Left Circle Up Circle Circle - Red Beam Mode 
          X Circle R1 Right Triangle X Triangle - Add 10 Missiles 
          R1 X R1 Right Square Right Square - Add 10 Grenades 
          R1 Triangle L1 Left Triangle Circle X - Restore Health 
          Up Left Down R2 Right Square X - Unlock All Levels 


                             Game Shark Codes

     Infinite Lives - D007B35C 0002 or 8007B35C 0003 
     Infinite Health - D0084466 000F or 80084466 0010 
     Moon Jump - D007C788 0040 or 80084492 FFF0 
     Infinite Missiles on Pick-Up - D007B444 0002 or 8007B444 0003 

Drench Level Codes 

     Moon Jump - D007C788 0040 or 800847B2 FFF0 
     Infinite Health - D0084786 0010 or 80084786 0011