The game is a direct C conversion of the "Hangman" game taken from the ZX Spectrum BASIC manual.
It requires 16K and a graphics expansion, G007, WRX and ARX modes are supported.
It is meant for 2 players, a first one will type in a secret word, the second one will have to guess it by typing the single letters.
It is advisable not to let the second player looking at the screen while entering the secret word !

Post scriptum: the graphics modes could not work well on EightyOne, they heavily depend on the version you are using.
As an example, in the (current) recent versions, the ARX mode "rolls" the character rows out of the expected intarlaced sequence.
Please report problems only if you tested the game on a real ZX81.