CAGEmap

by Spuzzum
Provides a "memory" interface that makes players memorize information about the map, and only notice changes when returning. Also blacks out all unexplored portions of the map.
ID:208907
 
Should work straight out of the box. However, since it overrides mob/player/Login(), there will likely be some configuration necessary.

Since this is published as a snippet rather than as a library, there will likely be some assembly (the action, not the language =P) required.