(Half-Life 2) Codes
     Enter   the   code   while  playing  Half  Life  2.  No  specific
requirements  other  then  the game. Can be entered at any time on any
level.

Restore Health By 25 Points
     Up Up Down Down Left Right Left Right O Button X Button

Restores ammo for current weapon
     Triangle, O, X, Square, RI,Triangle, Square, X, O, RI


Unlockable - Different Portal Main Menu
     Once  you  beat  portal  one time, a different background for the
menu is used to commemorate your accomplishment.

Half-Life 2 - Alternate title screen
     Beat the game once to get a new title screen for Half-Life 2.