Of all the habitable planets in the universe the planet named Erode is infamous for its tendency for accelerated erosion. You are a corporation who has learned the secrets of how to manipulate and control the planet's erosion.
You will build Biomes of huge stacked land tiles in your production facility. You will move these Biomes onto the planet. All of these actions will permit you to build corporate bases to exploit the planet's incredible wealth.
But you are not alone, your opponents have also been successful in producing these land Biomes, and the ability to control the erosion on the planet. You will be using this knowledge to set up Biomes in areas that you can control, and maybe using the erosion to crush your opponent's corporate bases in the process.
The object of the game is to have your corporation controlling the most productive areas of the planet.
—description from the designer