To be clear, the only people who will think this game is any good are those of us who played the original and have a bit of a nostalgia boner. Truth be told, the original game was good, but not great, and mainly shone because it was great for what was available at the time. Currently, it's easier than ever to make games on flash or other internet based platforms. This sort of quality is no longer acceptable, and really just looks kinda lazy. Using the art and the name just smacks of stealing the original creators art to sell a crappy, uninspired copy-pasta of what he struggled to create.
All the irritation aside, rating this as a game still requires a low rating. The art isn't great. The game itself is simplistic and far to short with no actual ending. And to be clear, slapping "demo" on the game doesn't excuse this. Plenty of games in development in this site that have an end-game even as they're working to pad out the overall content. This just seems lazy.
Finally, your inventory is buggy. There are at least 3 items which should be "traded", but they stay in the inventory.
Final word: This needs a lot of work as a game, and feels strongly like you simply stole someone's game idea and hoped you could pass it off as a "tribute."