On the art side, the team was challenged to create a completely believable world, and to produce leader scenes composed of fully fleshed-out characters greeting players in their native languages. The entire engineering team had the opportunity to create something unique, built from the ground up for Civilization V. On the engineering side, the excitement surrounding the creation of a new engine to accommodate these systems had an amazing effect. Some of the more exciting features proposed at the time included sweeping changes like one unit per tile, hexes, complex full-screen leader environments, and a new scale involving more units onscreen than we've ever displayed before in a Civilization game. Almost four years ago, John Shafer laid out his vision for the next iteration of Sid Meier's Civilization to our prototype team (which consisted of Jon, seven artists, and the ubermoddable Civilization IV engine).