.MS1 File Extension
VirtualBus Map File
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What is an MS1 file?
Game file used by VirtualBus (vBus), a free bus driving simulation game; contains a map that specifies roads, vehicles, traffic signs, buildings, and landscape objects such as trees and bushes; represents the 3D world that the player drives the bus in.
MS1 files are stored in the \Maps\ directory within the VirtualBus installation. If you download an MS1 file, it should be saved to this directory.
NOTE: Creating your own VirtualBus maps is a difficult task and requires some knowledge of 3D modeling tools. Generally, users download maps that have already been created by VirtualBus content developers.