It is the fourth Harvest Moon game on Nintendo DS. Like previous titles in the DS series, Island of Happiness utilizes the stylus, and also features WiFi capabilities.
You can choose to play as a male character, Mark or a female character, Chelsea. Your character is an aspiring farmer who wants to begin a new life on a far away island. The story starts with the player boarding a ship that will take him/her from the city to an island to start a new life. While you are on the boat, there's a violent storm at sea. The ship you are in is hit by a lightning bolt and gets destroyed.
A man named Taro finds you on the beach and checks on your character, waking him/her up. He was on the boat with the rest of his family, and you are all now shipwrecked on this island. Taro takes you to the top of the island and finds an old abandoned ranch. He asks you if you want to be the rancher of this island. You will automatically agree.
All movements and actions are done using the touch screen, with the D-Pad used to change/equip tools and items. The game uses Wi-fi to enable an online farm ranking service and an online voice chat session using the DS Microphone.
The characters of Island of Happiness are all new characters to the Harvest Moon franchise. Additionally, there are some characters to unlock when you meet certain requirements such as building up the island or getting a certain item.
In every Harvest Moon game, there are requirements to get married. The requirements for IoH are:
- You have met all main characters.
- Have your house fully expanded.
- Own the big bed.
- Buy the Blue Feather.
- You have seen your marriage candidate's black, purple, blue, and yellow heart events.
- You have unlocked the church.
- The candidate you want to marry must have a red heart.
- Main article: Your Child (IoH)
Your child will be born 90 days after your wedding date.
To have a child, your character must get married. After you get married, upgrade your house to "super size". 700 wooden lumber and 50,000 gold are required. Additionally, you can pay 80,000 gold if you don't have the lumber. After upgrading your house, buy the baby bed. This costs 10,000 gold.
Your child will grow into three different stages. Their gift preferences also change as they age.
The candidates that the player does not marry has potential to get married to their rival. By watching rival events between the rival couples, there is a potential for rival couples to get married. After they marry, the rival couple will also have a child of their own.
Shea, Mark, Chelsea and the Witch Princess do not have a rival candidate.
- Denny and Lanna can get married. They will have a daughter named Rosa.
- Elliot and Julia can get married. Their daughter will be named Kelly.
- Pierre and Natalie can get married and have a son named Jean.
- Vaughn and Sabrina can get married. They will have a daughter named Emma.
- Island of Happiness Characters
- Sub Villagers
- Cooking Recipes
- Weather Points