According to some estimates, Toys \"R\" Us stocked around 18,000 different toys during its heyday. Toys \"R\" Us was so successful that it is generally credited with creating the term category killer. The backward R in the Toys \"R\" Us name had a specific purpose. A hallmark of Toys \"R\" Us is the backward R in the name. Although you can’t walk into a Toys \"R\" Us right now, the brand hasn’t completely disappeared.