Extra items:
Hold [Option] and start a new game. Alternatively, enter a name and
identity, hold [Shift], and click on "OK". Keep [Shift] held until
game play begins.

Extra resources:
Hold [Option] + [Ctrl] and start a new game.

Faster game:
Hold [Option] + [Shift] or [Option] + [Alt] while playing the game.

Free castle:
Create a castle on the "visit" screen. Hold [Up] to auto-build the
castle. REMEMBER: A moat will not be included with the castle. This may
also be used to repair castles that have been damaged.