1. Columbus (Jesse Eisenberg) has 32 rules for surviving Zombieland, ten of which are identified in the motion picture: “Rule #1. Cardio”; “Rule #2. Double tap”; “Rule #3. Beware of bathrooms”; “Rule #4. Seatbelts”; “Rule #7. Travel light”; “Rule #31. Check the back seat”; “Rule #18. Limber up”; “Rule #22. When in doubt, know your way out”; “Rule #32. Enjoy the little things”; and “Rule #17. Don’t be a hero” (later changed to “Be a hero”).
2. Although his character is on a constant hunt for Twinkies, Woody Harrelson is a vegan, and does not eat Twinkies (which contain eggs and beef fat). According to Harrelson, the filmmakers made special “faux Twinkies” out of cornmeal for the scene at the end.
3. John Carpenter turned down a chance to direct.
4. Both Evan Rachel Wood and Megan Fox turned down the role of Wichita
5. The script, originally a television pilot, was heavily revised to become a feature film.
6. The “Zombie Kill of the Week” was leftover from the script’s origin as a TV pilot. Every weekly episode would have a Zombie Kill of the Week performed by characters on the show.
7. Patrick Swayze was offered a cameo role as a zombie before his cancer diagnosis. Zombie cameo roles were also offered to Joe Pesci, Mark Hamill, Dwayne Johnson, Kevin Bacon, Jean-Claude Van Damme and Matthew McConaughey.
8. The movie was supposed to be based on the video game Left 4 Dead 2. Valve, the creators and developers of the game, denied the studio permission to mention the game and company in the opening and end credits.
9. Originally titled “Another Day in Zombieland”, but the studio feared people would think it was a sequel.
10. Woody Harrelson was arrested for marijuana possession during filming, which delayed shooting for a day.