Photos: 'All in' for 'Graveyard Games'

"Graveyard Games" organizer Jane McGonigal hands out vintage decks of playing cards to the winners of the Tombstone Hold 'Em poker tournament Oct. 15, 2005, in Colma, Calif.

Dozens of participants in the first "Graveyard Games" walk through rows of headstones toward the game's gathering point.

The game's final instructions were for participants to gather around the grave of a little boy and pay homage by offering 500 or more "Last Call Poker" chips. The number donated turned out to be a fateful 666.

In addition to calling for an offering of 500 or more chips at the grave of the little boy, the game's instruction also led participants to form a large circle.

In the middle of the poker tournament, instructions arrived via the Internet that players were to set out on a hunt through the cemetery for a series of specific graves.

"Graveyard Games" participants face a cold, hard reality in a California cemetery.