Code Effect
RGCATS 9 extra lives
RGFILL 99 Ice/Rainbow ammo
RGGIVE Gives a random powerup (does not include Hyper X/Y/Z)
RGIOSA Invulnerability
RGCELL Makes all powerups last until the stage ends
RGWISH Skip the current stage
RGXCES Toggles serious explosions (does not prevent high scores)