Ghoul Patrol, the sort-of sequel to Zombies ate my Neighbors is apparently out on the Wii's Virtual Console service.
Ghoul PatrolRead the Mojo database entry here.
Original platform: Super NES
Publisher: LucasArts
Players: 1-2
ESRB Rating: E10+ (Everyone 10 and Older) – Mild Fantasy Violence
Price: 800 Wii Points
Description: The main attractions at the library's Goblin exhibit have come to life! As the Ghoul Patrol, you'll go back in time and de-spook an encyclopedia of zombified historic dudes. Vaporize garbage-can ghosts and ninja spirits, rescue bug-eyed librarians and wigged-out pirates, dodge flying books and adolescent-eating plants, and ultimately put the beastly spirit back in the history books.
No idea when it will be hitting the PAL regions - they're still waiting for the Indiana Jones game.
Update by Jason: Don't look now, but we published a review!
The ratcheted up difficulty wasn’t too bad though once you find out that ghost potions let you walk across bottomless pits, which the later levels are filled with.