Method and systems for executing an interactive computer simulation of a simulated vehicle. A central repository comprises a synthetic natural environment database (SNEDB) that comprises data for a plurality of geographically-located terrain skin representations of a computer generated. A remote data management system maintains the remote repository comprising a subset of the SNEDB accessible to an interactive computer simulation station. The interactive computer simulation station sends, over the network, a data request for geographical locations from the SNEDB and allows users to interact in the interactive computer simulation for controlling the simulated vehicle. The remote data management system computes a plurality of expected geographical positions for the first simulation station and anticipatorily updates, via the network, the subset of the SNEDB stored in the remote repository with a supplemental subset of the SNEDB corresponding to one or more of the computed expected geographical positions.