FamiGami: Story of Seasons is the latest entry in the Harvest Moon farming simulation series and comes to North America with a new title due to a complicated relationship with the developer’s former publisher. That’s a different story however and entirely irrelevant to the game itself so I’ll spare you the length explanation.
The confusion around Story of Seasons and Harvest Moon explained.
"Marvelous Europe Limited are today excited to announce that the beloved life simulation and farming franchise STORY OF SEASONS, known as Bokujou Monogatari in Japan and previously known as HARVEST MOON in the west, is celebrating its 25th Anniversary this month." - Marvelous Europe.
Pioneers of Olive Town has some striking differences that expand upon gameplay, but also several subtler alterations that make it just that bit smoother to play.