The post-launch plans show a development studio ready to run with that success – and fix some of the stuff it didn’t get right first time. Fallout has always been a popular series but the fourth entry has now sold more than 12 million copies, making it the most successful game in the company’s history. T he first downloadable content (DLC) for Fallout 4 has been announced and, reading between the lines, it’s clear that the game has been a hit beyond even Bethesda’s expectations.