Harvest Moon Back to nature was released on the Playstation one console on Nov 22, 2000. It had similar characters to the game before it Harvest Moon 64, but the families and personalities were changed for certain people. Also people in the last game who just had generic names were now given real names like the master of the bakery is now Jeff, the shipper is now Zack, etc.
This game was remade on July 31, 2007 and listed as Harvest Moon Boy & Girl and then the original was re-released for download on the PlayStation Network on Feb 8, 2011. The boy version for this game can be played using the Back to nature guide on this page, but the girl version is an entirely different game and while some events might be similar the game differs in various ways. Check out the guide for that to see the differences.