(Reuters) - Having found this holiday season that they cannot beat iPad, iPhone and iPod, toymakers have decided to join them, lining up a host of playthings that come to life when hooked up to the devices, gadgets that kids love to play with.

Industry insiders call them AppCessories, and expect a wide array of these items to be on display at the American Toy Fair, which officially kicks off in New York on Sunday.

The manufacturers have realized this is a hot area, and they are all jumping on it, said TimetoPlayMag.com Editor-in-Chief Jim Silver. It is an opportunity to extend the ages you are selling to.

The trend comes as companies, scarred by a holiday season when toy sales fell 3 percent in the United States, look beyond traditional toys to woo tech-savvy kids, many of whom have grown up playing on their parents' smartphones or their own gaming consoles.

Today's gamer is looking for experiences in games that include the marriage of digital and analog, face-to-face, and off the board gaming, Hasbro Chief Executive Brian Goldner said.

For a graphic on 2011 toy industry sales, see: link.reuters.com/rer56s

Hasbro, the maker of G.I. Joe toys and the Monopoly board game plans, to jump on the AppCessory bandwagon through its zAPPed gaming platform.

When you play with Hasbro's The Game of Life zAPPed, you will still move your car from space to space and select your path to retirement on a game board, but now you spin, get paid, sue other players and make important decisions on your iPad, after downloading a free app. The game will cost about $25.

But Hasbro is not alone in this arena.

Canada's Spin Master is betting big on an array of iPhone/iPod Touch and Android accessories under the Appfinity label.

When you talk about the holy grail of toys, manufacturers have been trying to find a way to marry the tech and the toy world, Spin Master spokesman Harold Chizick said, adding that appCessories might just be what they were looking for.

Spin Master hopes its AppDrive will appeal to racing enthusiasts by allowing them to use a steering wheel that can hold an iPhone, and play racing games using an app on the iPhone, while Appfishing will enhance virtual fishing using a rod that can hold an iPhone. Priced at $20 each, they will hit stores in the fall.

Industry goliath Mattel Inc will try to broaden the appeal of its classic brands such as Fisher-Price and Barbie as well as Monster High through its Apptivity line.

One product in this line is Fisher Price's Laugh and Learn Apptivity Case, which is basically a $20 sturdy case that will protect parents' iPhones from dribbles, drool, and unwanted call-making. The item, which features beads, a mirror and free learning apps, will help babies practice hand-eye coordination, Mattel says.

Toymaker WowWee, known for its little robot toys, will unveil its AppGear line, which combines physical toys with iOS and Android apps. For example, in Alien Jailbreak, which is an augmented reality shooter game, the player looks through his or her smartphone and tries to stop aliens from escaping from prison. AppGear products will be sold at about $10 to $20.

Companies such as Discovery Bay and Crayola also hope to offer compelling products in this category.

Rising teen cell phone ownership, growing demand for mobile computing devices such as the iPad, and the explosive demand for mobile apps are other factors boosting the trend.

As of September 2009, 75 percent of American teens age 12-17 had a cellphone, a number that has steadily increased from 45 percent in November 2004, a study by Pew Research Center showed.

Until now, traditional retailers or brick-and-mortars have been unable to tap into this huge growing market. They've been left out of the app party, said Mike Gonzales, creative director and digital brand manager for WowWee.

Like many others, Gonzales now sees an opportunity to take a bite out of the app pie.

At an event earlier this week, Toys R Us CEO Jerry Storch summed up the trend: The combination of the physical world and virtual world is so powerful that it's almost unexplainable.

One of Storch's favorites heading into the year is the follow-up to Activision's Skylanders, a video game that comes with physical toys that spring to life on screen when they are hooked up to consoles such as Microsoft's Xbox or Sony's PlayStation. A chip inside the figurines stores a player's progress in the game.

The latest iteration, called Skylanders Giants, will feature characters that are taller and have new kinds of power. The newer characters can also light up without needing batteries.

Skylanders will be even larger in its second year than its first year. It could be one of the biggest toy franchises of all time, Storch said.

While the toy industry is betting big on AppCessories, a few parents are skeptical.

Amanda Bergman, a New Jersey-based web editor and mom of two, said she would probably not buy toys and games that will come to life with an iPad or iPhone.

Sounds like kind of a hassle, to be honest. I'd prefer to maintain the separation between toys and iPad! And I feel like the novelty would wear off quickly, said Bergman, who normally lets her children, 3-year-old Elliott and 5-year-old Adrian, spend one to two hours on average on her iPad.

Apple Inc makes the iPhone, iPad and iPod.

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