Roblox is one of the world’s most popular kids’ games, but lawsuits around the country allege predators are hiding in plain sight.

Brainrots in this experience are categorized into different rarities as a shorthand indication for their cost and effectiveness. Secret is the runner-up in the rarity hierarchy, the top being OG.

Kyasia Watson joined Roblox in 2009, when she was eight years old, drawn by a banner ad promising players could build their ...