They may look like innocent collectibles, but blind box toys tap into powerful psychological mechanisms that, concerningly, keep people coming back for more.

Each trunk of 144 blind boxes may contain one or more limited-edition figurines, the most sought-after item in a series of characters or toys.

The toy maker has a history of inking lucrative partnerships with fellow entertainers. It's but another indication that Roblox has real sticking power with its young user base and a new way to ...