Random maps can also be used by scenario designer to unlock previously unavailable units. For example in Age of Empires II, designers have used RMS to unlock new terrains and units. The unit-terrain combination of fish on shoreless water is one such application of this technique.
Scenario designers might employ random maps to access previously hidden units. An illustration can be seen in Age of Empires II where designers utilized RMS to reveal new terrains and units. One example involves the combination of fish inhabiting uncharted water bodies.