Monsters in the Dark: The Making of X-COM: UFO Defense tells the story of the early years of legendary strategy game designer Julian Gollop and the making of the original X-COM, and is funding now on Kickstarter. In this excerpt from the book, Julian and designers from publisher MicroProse UK reveal how the atmosphere of the game (known as UFO: Enemy Unknown in the UK) added even more tension to the blink-and-you’re-dead tactical gameplay.