Roblox Steal a Brainrot is one of the most popular and unusual tycoon experiences on the platform. Instead of developing buildings or cities, players have to collect collections of Italian brainrots.

A gaming platform used by nearly 400 million people a month is in turmoil after the company that owns it banned a user who goes by the name Schlep. It’s unclear why the user, a 22-year-old Texan, ...