Hearts

Hearts

Secret - Show All Cards
Instructions - Edit this registry key: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Applets\Hearts and create a new String value named ZB with a Data value of 42. Start Hearts and Press Ctrl + Alt + Shift + F12 to show all the cards.

Background - This secret is a reference to Douglas Adams' book the Hitch Hiker's Guide to the Galaxy. 'ZB' is the initials of the character Zaphod Beeblebrox, the Galactic President. '42' is the answer to The Ultimate Question Of Life, the Universe and Everything.