The levels that have an extra objective/goal or more than one besides the Brain Buster objective and the regular objective "Defeat the zombies" or "Survive a massive attack". There are common objectives that the player can meet:

  • Don't let the zombies trample the flowers.
  • Never have more than X plants.
  • Spend no more than X sun.
  • Produce at least X sun.
  • Don't lose more than X plants.
  • Survive without planting on Dave's mold colonies.
  • Defeat X zombies in Y seconds.
  • Survive without any lawn mowers.
  • Survive with most plants given for you.