There's a princess, and there's a hero, and there's a dragon, well, that's really all there is to it.
Who'd released the game before 2010? you claim it was 1983 or something I say? This must be not on the amstrad CPC or Commodore 64 in one year later I guess?
Did you know them?...
You should give the game's colours (Or Black and White) and make your game screen smaller.