All puzzles are done, now what else is there? I can't walk into the cave! What do I do now, just let my 67 villagers grow old and die?

try differant ways to play. Some of us try to play without anyone dying. Others do it with out getting level 3 farming. There are lots of ways to play that are that make the game fun. Have you tryed it on Hard yet. Thats not easy at all.

I have level three of everything. So, that's why I'm asking what's next. I have all the puzzles and levels. There has to be more than this!

There has been a lot of good discussion about that topic in the forums. Here are links to some of the threads:

look here
and here
and here
and here