Hey guys, if you've read my Halloween article you may have remembered hearing about Monster Party having an unreleased prototype. One lucky person won the original cartridge of the prototype at an online auction, as stated to have been finished, and that it was much darker than the final product that the U.S. got. So I bring good news that the owner of the cart decided to finally make a romdump copy to be able to play via emulator after having heavy grasp of not wanting to release it despite its worth in its sale. Some bosses and enemies are different than how they looked in the final game, and I recommend giving the prototype a look. There's a few references to the bosses too, like Audrey from Little Shop of Horrors and an Alien from the Alien movies.

here's the download link:
https://docs.google.com/file/d/0B4f5kdjyHmF-WmYzaEdud2pSNlU/edit

I had read about this on another site some weeks ago. It seems to be a very popular rom at the moment.

I've got no problem emulating games that will never hit the Virtual Console

just remember to get health power ups often from any enemies that you defeat, you'll need as much as you can get to pass most of the levels. but if you don't mind spoilers and don't want to go through its difficulty, someone already made a whole walkthrough of it on youtube