Official Page  -  https://assetstore.unity.com/packages/tools/level-design/fleck-map-generator-random-level-creater-87264  
Latest Version   1.1.1
Supported Editor Versions   5.3.8 or higher
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Available downloads

  • Fleck Map Generator Random Level Creater v1.1.1     March 7, 2020

  • See also... 

      TileEd
      SPACE for Unity - Space Scene Construction Kit
      Non-Convex Mesh Collider. Automatic Generator
      Octave3D-Level Design
      Space Graphics Toolkit