Collectible plushies and trinkets have made waves on social media, and they're fueling a new business venture around Chicago. Claw machine arcades have emerged as popular sources of rare collectibles, ...

Taipei is game-crazy. From pinball machines to toy dispensers, the gray city blocks are sprinkled with the neon glow of mini arcades, with enticing names such as “Happy Moments” and “Sweet Box” (?).

For an online teacher surnamed Yoo and designer Kim Hye-jeong, claw machines are not just a casual activity nor a money-eating trap. Each visit ends with bagging at least 10 items, and sometimes up to ...