Leading Company is a construction-oriented strategy video game that was released for both the Super Famicom (SNES) and the NEC PC-9801. The traditional definition of a leading company is a corporation that currently dominates the "corporate wars" against their competitors. Its employees are considered by most people to be winning the "rat race."
Both versions of this game were released to an exclusively Japanese market. However, the NEC PC-9801 version has sharper graphics and the ability to use a mouse. Instead of abstract colors (to depict control of each square of the board), buildings are used to depict a typical Japanese residential neighborhood. A theme park is visibily shown on an island in the PC-9801 version to depict recreational opportunities.
Source: Wikipedia, "Leading Company", available under the CC-BY-SA License.