History of video games/Early games/Dr. Nim

History
Dr. Nim was a mechanical consumer computed dedicated to playing a single computer game released in the 1960's.

Technology
Dr. Nim can play against a human opponent, or it can play against itself. Dr. Nim also had a difficulty setting between perfect play which was between un-winnable without cheating, and winnable.

Dr. Nim uses a special board and 18 marbles for operation.