Wondering what to buy your niece or nephew this year? Don't cop out with a gift card -- impress everyone by giving them what they really want. Toys with pop culture tie-ins were performing the best this year, but you can break down the trinket trends even further.

For boys, the top toys are Legos, cars or trucks, Teenage Mutant Ninja Turtles merchandise, video games and hotwheels. The Xbox One barely beat out the PlayStation 4, but both still made the top 10. For girls, Barbie lost her No. 1 spot for the first time in 11 years. One-fifth of parents surveyed said they bought their child a "Frozen" item for Christmas. Barbie was second, followed by generic dolls and Monster High merchandise.

“Barbie has been the top girls’ toy for over a decade, but it is no surprise that Disney’s 'Frozen' has taken the top seat as children have had it on the mind as far back as Halloween,” Prosper’s Consumer Insights director Pam Goodfellow said in a statement.

Here are the holiday season's hottest toys by gender, according to the National Retail Federation's 2014 survey. Need to get even more specific? EBay put together a map of popular toys based on state by gathering data on the number of items sold on its site during the week of Nov. 10.

In New York, the newest versions of "Call of Duty,""Halo" and "Assassin's Creed" topped kids' wish lists. California children wanted "Call of Duty: Advanced Warfare," too, but they added Lego minifigures and "Super Smash Bros."

In North Carolina, the most popular toy was -- of course -- a 12-puzzle "Frozen" set, and in Kentucky the snow glow Elsa doll took the top spot.

Young New Mexico residents were yearning for trains, as the top two hottest toys there were both tracks. Furbies were coming back into style in Alabama, and Kansas kids wanted "Star Wars" Clone Wars action figures -- specifically, Anakin. 

Whatever you decide to buy, do it fast. There are about 15 high-demand items that have already sold out across the country, including the Max Tow Truck and Disney's "Frozen" Castle and Ice Palace Playset, Reuters reported. My Little Pony, FurReal Friends and Nerf toys were going fast, too.

"There are clear bets by retailers -- orders for 'Frozen' toys and My Little Pony toys are up massively versus 2013," Josh Green, CEO of research firm Panjiva, told Reuters.