Board Thread:Plants vs. Zombies 2: It's About Time/@comment-5792287-20131203091220/@comment-5106079-20131211014050

@Wes174 You can replay the same challenge again. You don't get any reward again, just coins.There are no more stars.

@Awesomesix When I first received the update, I had already beaten all the levels. However, in each world the 8th level was with a red icon, instead of the blue one. And if you checked the map, it said "23/24" levels.

Sorry for not explaining it well. Yes, you have a key, but Far Future is not released yet. They give you it to unlock the new world when it be available.