Barbarian © 1988 Melbourne House.
The game is unfinishable, it had a bug at the end with an inaccessible ladder.
Message from the developer hidden in the code:
"OK I CAN'T FOOL YOU HACKERS-BUT PLEASE JUST FUCKOFF... NECRON RULES !!!!
HA HA AHA - ON NO NOTAHA AGAIN BY THE WAY IF WOULD HAVE BEEN MUCH EASIER TO POKE O WITH MY INITIALS."
Program: Paul Murray
Title screen: Ed Knight (J. Ed)
Graphics: Gary Forsyth
Illustration: Roger Dean
Game's cassette.