Crossings (Buffy the Vampire Slayer)

Crossings (Buffy the Vampire Slayer) by Odom, Mel. mass_market edition. ISBN: 9780743427340.

THE MOST DANGEROUS GAME Buffy and Dawn are having difficulty settling into their new roles, now that their mother is gone. Buffy herself is reluctant to cross over to the role of parent, and the two are bickering more than usual. In fact, Buffys distraction prevents her from noticing strange behavior among the video-game crowd. One of Xanders friends goes medieval outside the Sunnydale movie theatre, laughing and babbling that he cant be stopped -- hes only in town on a temporary visa. Puzzled, Anya and Xander investigate. It seems that people whove been testing a new video game have been demonstrating creepy tics. As the Slayer attempts to put all of the pieces together, Anya is abducted into an alternate demon universe. Buffy had better figure out how to get her friend back to Sunnydale, before the game is over, for good...