These collectible discs connect to a virtual world on the Dokodrop website, which tracks the location of the discs as trades are made and entered. Players can also safely chat, message and play hundreds of free games. The discs are 40 mm wide and 6 mm thick, and include an eight-digit, laser-etched Doko ID. A Doko can be traded up to five times after it is initially registered, and online points, which can be used on the website or for real-life discounts, are awarded as the Doko is registered by additional people. The company calls Doko the "world's first global trading game." Doko "combines the fun of trading and collecting with a safe, social network that lets tweens safely communicate with other Doko players around the world," Brian Waldman of Mammoth Toys, a division of NSI International, told TDmonthly. Launch date: May 2008.