This Mardi Gras parade has gone severely off course and the undead walk among us.
Zombie Gras enhanced the storyline of ZombieGeddon. In the house, a sudden power failure causes the zombies' collars that maintain their docility to fail and leads to the ZAP facility being overrun. Upon exiting the facility, you discover the cause: a Mardi Gras parade crashed into the power lines outside the building, allowing the zombies to escape and infect the parade.
- Zombie Knight
- Wounded Jester
- Chainsaw Zombie
- Bead Zombie
- Knight Zombie
- Frog Zombie
- Trombone Zombie
- The background music used in the Zombie Gras scarezone is actually a series of excerpts used from Universal's own Mardi Gras Parade which often runs normally from February to April during Universal's Mardi Gras event each year.
- This is the first scarezone located in San Francisco.