You have to

Thank you so much. I am now finished with all the puzzles. I have VV 2 and am on to getting VV3. Just wondering, do the games ever interact with each other? Is there any reason for me to continue playing version 1.

The Virtual Villagers' games are all in the same island: Isola! so each game is the continuation of the precedent.
And even
But, if there is a continuous story, there is not really interactions while you play in one game.

not yet!!