Manuel Otto, the German video game developer behind the popular Facebook game Stick Run, has died at the age of 30. Otto created the game when he was just 14, and it reportedly attracted more than 43 million players worldwide. His death followed a fire at a property in Bavaria, Germany, and was reportedly linked to a Twitch livestream.

Otto was a 14-year-old high school student when he created his most famous game, “Stick Run.”