- Second, full-fledged campaign with 30 new days to survive
- Fresh zombie types to crush, including exploding, dynamite-strapped zombies, strong zombies that (almost) always keep their feet, and a towering boss to take down
- New specials like fireworks that launch zombies into the air for a spectacular finish and a head inflation power that blows zombie heads up like balloons
- Twitter connectivity to easily share your best smashes with the world
- In-app purchasing opportunities to help players even the odds
- Expanded soundtrack with all-new, zombie-killing tunes by video game music legend Chris Huelsbeck
- Crisp Retina graphics with added parallax scrolling effects
- Game Center support
- 25 additional Game Center achievements resulting in over 40 achievements to be earned.
- Major overhaul of the Sandbox with the ability to zoom and move the scene and an improved zombie spawning menu
- Countless gameplay improvements such as automatic shooting, more diverse special generation and visual indicators for activated specials.
