In 2014, Yacht Club Games released its very first game, Shovel Knight, a joyful 2D platformer that wears its NES influences on its sleeve. This unlikely pastiche of 8-bit inspirations manages to emulate the look, feel, and even the technical limitations of nostalgic titles like Mega Man, Zelda II, and Castlevania III--imbued with a contemporary sense of humor and self-awareness. But how is a fundamentally retro game created in the modern era? And...