"We are 99 percent done," StarCraft II lead designer Dustin Browder told Kotaku when asked about progress on the upcoming Heart of the Swarm expansion for their science fiction RTS sequel. However, he makes it sound like one of those progress bars that will sit at 99% for a while, adding: "but that last one percent's a bitch." He goes on to explain that all the units are in place, but this next phase is open-ended: "It's the tuning and polish that really takes us a long time, and that's where we get into the unknowns."