Bergen is German for mountains.
Because the game is sometimes referred to as “the Bergen game,” there is reason to believe it did not originate in Germany, but might have come instead from Bergen op Zoom, a coastal town in the Netherlands, or from Bergen, Norway.
What's unique: Both ends of the layout must be made alike
The rules are the same as for the Block game or Muggins with the following exceptions:
Number of dominoes drawn: Each player draws 6 tiles.
You must make both open ends of the layout alike.
Reprinted with permission of Sterling Publishing Co., Inc., NY, NY from GREAT BOOK OF DOMINO GAMES by Jennifer Kelley, ©1999 by Jennifer Kelley. (The Sterling book is available as PUREMCO'S GREAT BOOK OF DOMINO GAMES)