“The Blair Witch Project” had an innovative online advertising campaign that spun out the film’s mythology into a web site filled with fake backstory details. Now, Steven Spielberg’s “A.I.” has an even more immersive online game component, with faxes, phone numbers, emails and interrelated web sites about the mysterious death of Evan Chan. Write the Web has an interesting article about it. If you want to play the game yourself, start by searching for “Jeanine Salla” on Google – she’s listed as “Sentient Machine Therapist” on the film’s posters.