User blog comment:Tecku/How the Dark Ages could have been saved/@comment-4417029-20140814091735/@comment-24951189-20140815201712

^^ Zen Garden is not a reasonable excuse. By that logic, the zombies can be as overpowered as you want, as long as you have Zen Garden to help you out.

If the game was truly balanced, you would be able to defeat the levels without Zen Garden. Endless zones are another story, but the main levels should be beatable by using strategy, not super-powers.