Developer - Fairchild
Publisher - Fairchild
Release - 1978
Maybe there was even earlier versions on computer systems, but no proof has been found yet.
This version for the Channel-F offers many options and a has a 160 words built-in vocabulary! Options include: 1 or 2 player games, with or without score and 13 variations (free letter, unknown length, squeeze, etc.). You can of course enter your own words.