Geo-Hex Terrain Simulation Systems (1988)

Publisher's blurb:

The world isn't flat, and neither should your battlefield be. That's why you need Geo-Hex, the revolutionary patented terrain system.

Unlike a series of boring rectangles or squares that limit your set-up possibilities, the Geo-Hex system is comprised of seven shapes mathematically engineered to simulate any portion of the earth's surface you wish to duplicate.

Geo-Hex comes totally finished and ready for play. Whether you're a history buff or playing for fun, this system is designed for you!