Bonus characters - Have the Game Boy Advance game Harvest Moon: Friends Of Mineral Town or Harvest Moon: More Friends Of Mineral Town in the cartridge slot for characters from the corresponding game to appear in Harvest Moon DS.
Changing weather - To change the next day's weather, reload the previous day and go to bed. This works best if you save before you go to bed and check the weather the first thing in the morning so you do not loose any work. It may also require a few attempts. You can also avoid a collapsing building or animal death by doing this.
Cheap items to sell and unlock Harvest Sprites - This trick requires some patience and a good amount of money. Having the Miracle Gloves also is recommended. Call up either of the livestock farms and buy as much fodder/feed as you can afford, usually in amounts of 99 each. Sell all of them, which is easy with the Miracle Gloves equipped. The Sprites require the following numbers to be unlocked. Note: All the sprites unlocked are part of the harvest team.
Diamonds - Once you have opened up the second mine, spend some time in it to mine as many diamonds or pink diamonds as possible. Instead of selling them, give them to the girl of your choice. Almost every eligible girl loves receiving diamonds, which gives two thirds more affection points than just flowers or other basic gifts.
Easy money - Once you get the Legendary Sword from the bottom of the second mine and unlock the Super Field behind the waterfall, go there in the Fall and plant Yams. Because the Waterfall Field speeds up growth by one day and the Yams regrow every two days, there will be a new harvest every day after the initial harvest.
Eligible girls - The girls that you can marry are: The Harvest Goddess, Flora, Keria, Leia, The Witch Princess, Muffy, Nami, Lumina, Celia, Ann, Popuri, Elli, Karen, and Mary.
Field upgrades - The different items that you can use to upgrade your field houses will rot away after different periods of time. The following materials can be used to upgrade:
Leave the screen - Get on your horse and go to a place where there are two walls on each side near the transition area (for example, the entrance to the beach). Get as close as you can to the edge of the screen without going to the next area. Have your horse touch and face the right wall. Get off the horse. You will be off the screen but still able to move left and right. To exit, just move back towards your horse and you will instantly move to the area you were near.
Littering - The only place where you can litter is on your field. Anywhere else will cause people to begin disliking you.
Lumina - Birthday: Spring 29 800 love points: RelaxTea (Pot, Relaxtea Leaves) 500 love points: Diamond, Pink Diamond Black: Mansion, 4 p.m. to 8 p.m. Purple: Your house after purchasing the DVD Player Blue: Goddess Pond, 1 p.m. to 8 p.m. Yellow: Lumina's bedroom, 9 p.m. to 11 p.m. Baked Yam (Oven, Sweet Potato) Dry Curry (Frypan, Rice + Curry P) Omelet (Frypan, Egg + Milk + Oil) Omelet Rice (Frypan, Egg + Milk + Oil + Rice) Strawberry Milk (Pot, Milk + Strawberry) Shop hours Shop in person
Pets - To get as high a friendship as you want with anyone in town, repeatedly try to give them your pet. If you have the Love Bangle equipped (not necessary for the effect), you will see that every time you talk to a person with a pet in your arms their friendship score will increase one point. If you do this inside and have a lot of patience, you can get someone to as high a score as desired within one day. This method is also useful for unlocking the Channel 7 Harvest Sprite, who will appear the day after you earn at least 100 friendship points with someone. If you do not have the Love Bangle equipped, then just show your pet to someone 100 times.
Rucksack - Instead of putting everything in different squares, put them together. For example, if you need two of the yellow flowers put one in one square and the other in the same square. It should now read "2".
Saving time - While in a building, equip a tool from your rucksack. Then, access your map via the touchscreen. For example, if you have your watering can while using the map, touch one of your crops with the stylus to water that specific crop. This is a great way to take care of crops, gathering building materials, etc. while not wasting any game time.
Special children - If you marry either the Harvest Goddess, Harvest Witch, Princess, or Furen, you may get a special child. This is a child that wears different clothes and looks differently instead of the child you will get by getting married to any other girl.
TV Shopping channel - Buy items from Karen at the Supermarket for ten days in a row to unlock Channel 2, the TV Shopping Network.
The Harvest Witch - Her birthday is on Winter 29. She lives in the small hut near the mansion. She likes Red Grass and Poisonous Mushrooms, and loves Rainbow Curry.
Watering can - To increase the rate at which your watering can powers-up, repeatedly fill it up at any water source, such as the pond or your farm. Once you have filled it up a desired amount of times, use it once and your experience for it will increase significantly. Even when it is near Mystrile level, each time you fill it will count as one value better then the three to four uses per value it took before. This is easiest if you have a basement, because you can use the watering hole in it to avoid passing time during the day.