.NSBMD files are three dimensional models used by a Nintendo DS program. .NSBMD files may contain two sections; a modeling block and a texture block. The modeling block is noted in the file by the "MDL0" identifier and the texture block is noted by the "TEX0" identifier block. .NSBMD files may also refer to a separate .NSBTX file that contains the textures that are used within the 3D model.

These files can be viewed by the 'Windows NSBMD Tool' application.