This is another sad example of a game that was totally overlooked when it was released and never got the attention and market share it deserves.
Ghost Master has excellent production values and I think it perfectly pulls off the gameplay the designers set out for. The graphics also were very impressive and I love the style.
There are a couple missions that seem a half-broken, ie - the actions you perform seem to illogically not meet your mission objectives. I remember those occurrences being bothersome but not nearly enough to get fed up with the game and that is the only complaint I can remember having about this awesome game.
It's a shame they never made a sequel, especially considering the ending.