Classic Hangman videogame, though this one might be the first of its genre on a console along with Hangman for the Atari VCS 2600, and Hangman for the APF M1000 released the same year (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.