Here is a list of the only codes that work:

• BLACK SHEEP WALL - Reveal Map
• POWER OVERWHELMING - Invincibility
• OPERATION CWAL - Fast Build
• FOOD FOR THOUGHT - Ignore Supply Restrictions
• SHOW ME THE MONEY - Extra Minerals and Gas
• THE GATHERING - Unlimited Mana Powers
• THERE IS NO COW LEVEL - Instant win
• GAME OVER MAN - Instant loss
• NOGLUES - Enemies cannot use Magic
• SOMETHING FOR NOTHING - All available upgrades
• OPHELIA - Level Select
• MODIFY THE PHASE VARIANCE - No Building Restrictions
• WAR AINT WHAT IT USED TO BE - Lift the Fog
• WHATS MINE IS MINE - Free Minerals
• BREATHE DEEP - Free Gas
• MEDIEVAL MAN - Free upgrades for units
• STAYING ALIVE - Play Forever

This code only works with BROOD WAR

• ZERG FREE RADIO - New music

The following are not codes but hidden extras

• If you start the first mission level for terran, on the original Starcraft, and leave it for about 10 minutes a recipe appears!!
• Try clicking on units numerous times as it usually leads to some amusing one liners!!