gnubg-data 1.06.001-1build1 (amd64 binary) in ubuntu bionic

 GNU Backgammon is a strong backgammon program (world-class with a bearoff
 database installed) usable either as an engine by other programs or as a
 standalone backgammon game. In addition to supporting simple play, it
 also has extensive analysis features, a tutor mode, adjustable
 difficulty, and support for exporting annotated games.
 .
 This package contains the data files needed by GNU Backgammon (textures
 sounds, locale information, neural network weights, and so forth).