Heavy Metal: Fakk 2 seems have been set up that way. The game ends about half way thru the story. Too bad it didn't sell very well. It was a cool game.
Ahh yes, that's the problem... As an analogy, if Fellowship of the Ring hadn't sold out, it wouldn't have boded well for the other two in the series... A shame as you say. The public don't appreciate quality in any of its forms. Music, television and film. Poor quality sells, as long as it's bright and colourful.