Take-Two shares have jumped approximately 12% today on this news. What the market is not factoring in, however, is the downside risk coming Take-Two’s way with the sale of this “Mature” game to kids, which is a murder simulator for violence against women, cops, and innocent bystanders…

Thompson will, in the days and weeks ahead, be contacting state and federal officials to stop the improper sales of Grand Theft Auto IV to anyone under seventeen years of age, as any such sales violate state and federal fraudulent and deceptive trade practices statutes.

Indeed, Thompson has today contacted Florida Attorney General Bill McCollum, who has supported Thompson’s efforts in the past.