I solved all the puzzles and my villagers are just continuing on. Does the game end or do they just go on farming and breeding, etc?
Also, on the high score list, I see that some people have populations over 90, but when I reached 90, I got a message that I had reached the maximum sustainable population. How does one get more than 90?

no it dont!
but you could aim for new goals!
like:
finish it in hard mode etc.

To get higher than 90, and to keep this thread unspoiled, I will give you a little clue:

1. Breed villagers at a certain population and hope for the best. 2. Wait for a certain happening at the right population.

Good luck!

ive completed all the puzzles and my villagers are just havin parties and babies and fishing etc. i think thats it. maybe we have to start over?

maybe buy VV2??

You can still continue it and watch your tribe to grow , work , love and make a baby like the real peoples.

You can play it again in another mode to challenge yourself on everything , i thought the hard is very challenging to play because it started with only 5 Villagers.

you could do it in a certain amount of time

I have managed to get to 116 villagers. just keep playing cause the events will give you more villagers and sometimes you have twins or triplets to put you over your set amount of villagers. I am at a total of 115 but tend to go over that amount with twins. As older villagers die you make more babies. I love getting those little firey red haired villagers or the ones with the tatoos on their faces. I am trying to get another yellow hair villager. Check out the spoilers they help keep you interested.

It's not possible to get that many villagers in VV1/Village Sim, so you must be playing VV2 to get that many. This is the VV1 forum.