A Sim Group is a Grid Structure that cannot be defined as a continent, subcontinent or sim cluster. It has between 2 and 9 sims. These formations are rare and usually very isolated. If they are found isolated, they are listed in the List Of Microcontinents And Sim Clusters Currently, the list contains 16 sim groups.. Many sim groups are common inside a Sim Cluster or in Unassociated Sims.
Total number of sim groups is unknown, it is estimated to be somewhere over 300 or 500.