I hope you enjoy the hack, I've been working on it on-and-off (off more and more as the years went on) with a friend of mine (Matt) for nearly a decade.
The hack is pretty complete, there are a few more features I wanted to add, but I don't see that happening. If anyone else wants to continue working on
this game, I would be more than happy to share my notes with them. You can contact me at jon.grunes-AT-gmail-dot-com

Also the level editor we (Matt) created can be found here: http://mattptr.net/software/

Enjoy!
-Jon (Imp, Stanley Decker, various other internet monikers)

New Features for Oh No! More Zombies Ate My Neighbors!

*55 new levels, including 8 Bonus levels, a new Credit Level, and a secret Mystery level

*Reverse Inventory Cycling - Nothing I hated worse in the original game than 
being chased by a werewolf, franticly hitting the B button looking for the 
silverware, accidently passing it, and having to search through the entire
weapons stock again.  Now if you hold down the "L" button, you can search
backwards through your weapons and items inventories. The formerly unused "Select" 
button not brings up the victim radar.

*Random Starting Items and Weapons - When you start a new game or put in a password,
you will start with any weapon or item in the game (chosen at random) instead of
always getting the squirtgun and healthkit. All the ammo amounts have been 
pre-selected for each weapon and item, so you won't start with 10 tomatos or 255 
healthkits.

*New Weapon: Banana - The banana weapon, which was replaced with the popsicle and
dummied out of the final release has been added to the game.

*New Enemy: Soda Machines - These possessed vending machines hurl a never-ending
supply of soda skyward. When they land, the explosion hurts any player in the blast
radius. You can run inbetween explosions if you time it right, or blow the machine 
up with a bazooka and be rewarded with a 6-pack. Monster punches will also kill
the machine, but also destroys the 6-pack.

*New End of Level Bonuses - 	Frankenstein Destroy Bonus (2000 points)
				Monster Frozen Bonus (2000 points)

*New Victim: Blue Cheerleader - She's alot like the old cheerleader, but she has
a BLUE DRESS!!!!