Trader Radar - Tuesday, Mar. 18th

Q: On Fast Money's Trader Radar we look at the stock that was lighting up screens across Wall street today. Whether it's answering the Call of Duty or finding your inner Guitar Hero, the world's largest video game-only retailer benefits from increasing demand demand for the Wii, X-Box or PS3. On Tuesday, the company reported earnings out of this galaxy, in part because of sales of the new Super Mario game. Who is it?

A: GameStop is on the Trader Radar tonight. Shares of the gaming retailer traded twice the average daily volume Tuesday.