The Wall Street Journal has an article on After Shock.

The Institute for the Future, a think tank in Palo Alto, designed an alternative-reality computer game in which participants wend their way through a quake-stricken Los Angeles. A sample scenario: "It's three weeks after the quake, you don't have power, your credit cards are useless, and you're paying $10 for a Diet Coke," says Jason Tester, who helped design the game.