I’ve been playing the I Zombie Endless puzzle quite a bit in Plants vs Zombies and have been looking for some tips.  I found a couple resources out there in Internet land that I found really helpful:

  1. Steam Forum – a few tidbits in this forum post, not super helpful but good for the new player
  2. Brighthub – this one is a bit better, describes the puzzle and what you must do.  There are some basic helps in the Tips and Tactics section
  3. Gamezebo – a few tips toward the end of this page although most of them are for the individual I Zombie puzzles and not Endless
  4. **I Zombie Endless Guide – the best resource I could find, actually shows examples of levels and how to attack them which were really helpful.

A typical plant defense layout in I, Zombie Endless

Here are my tips from experience playing I Zombie Endless

  1. Always plan in advance.  There is no time limit so be patient.  Think about the cheapest way to take out the defenses.
  2. I love Bucket Zombies and Diggers.  They are relatively cheap and I find myself using them the most.
  3. Imps aren’t good for much except grabbing the brain and getting Squashed, eaten, or blown up.
  4. Michael Jackson zombies (aka Dancing Zombies) are a risk because they are weak.  Use with caution.
  5. If you are low on Sun, go for the Sun first.  Seems obvious but if you run out of sun, it is all over.