Harvest Moon

Harvest Moon is a 1997 RPG released for the Super Nintendo Entertainment System where the player takes control of a farmer. They run their grandfather's ranch for 2 and-a-half years by growing crops and raising livestock. You can even get married and start a family. The game met critical acclaim for its simple yet addictive gameplay. Spawning numerous sequels and spinoffs, Harvest Moon planted the seeds for a huge franchise in the gaming industry.

Rarity
Because of the popularity of the game and its importance to the franchise, authentic Harvest Moon cartridges sell for about $150. Complete copies can go for over $400 and sealed ones are valued at $1,500.