Some of the best loved videogames—ones like Silent Hill 2, Assassin’s Creed II, and Mass Effect 2—are sequels. These titles are widely considered to be substantial improvements over their predecessors, the design changes made from older to newer release seen as necessary overhauls or refinements of what came before. The success of sequels isn’t unusual for videogames. A large part of whether or not a game is enjoyable can come from the sort of mechanical improvements that often arise with development iteration. But, all the same, following up on a well regarded original comes with its own difficulties.