User blog comment:Milesprower2/PopCap, you've gone TOO BUCKING FAR/@comment-28200709-20141114120226/@comment-25154254-20141114143233

Day 30: Do you remember the upgrade in Far Future? That means we can use one.

I see. I haven't tried it many times, so I will play it again and see if I have a good strategy.

To me, Day 16 was the hardest, not Day 28 :P.