Board Thread:Weekly discussions/@comment-27101994-20170227104745/@comment-25279441-20170227173847

They might be lazy, but I still like them if for no other reason then for a challenge.

I find them as being like New Game+ levels. You're obviously not intended to go through them on your first trip but once you've beaten the main campaign of all the other worlds and already have an adequaltely powerful aresenal of plants.

This is me with only Level 1~3 plants. Given you're still going to need Power Ups, know when you should cheap out and get extra Plant Food. Basically these extra levels are meant to push you.