Roblox has reached a popularity level with the young gamer demographic that few developers could ever dream of achieving with their releases. But at the same time, a shocking number of people have never heard of it. As it turns out, games starring player-customized faux-Lego figures just aren’t very popular among adults, but they’ve taken the world by storm for those under the age of 14. If you’re unfamiliar, Roblox is a game on PC, mobile devices, and Xbox One that lets users create their own avatar and play any number of thousands of games that are all created by...