Easy money:
After getting the frozen heart "AF", defeat the Boss and re-enter the level. Instead of going to the Field Of Lost Guilt, move right. Go in and out to get Dragon Eggs that sell for 5,000 or 500 Lucre.

Get a Chocobo:
To get a Chocobo as a pet, have a Final Fantasy 8 saved game on the same memory card as the one used for Legend Of Mana. Enter the save screen, highlight the Final Fantasy 8 file, then exit out of the save screen. When you catch a bird egg in the eastern section of Domina it should hatch into a Chocobo.

Get "Fastest Wheel":
Complete the "Catchin` Lilipeas" quest and have a saved game from Chocobo Racing on the same memory card as the one used for Legend Of Mana. Highlight the Chocobo Racing file, then exit out of the save screen. Go to Polpota Harbor. On the Polpota Harbor map screen Skippy, the thin big eared creature from the "Catchin` lilipeas" and "Huntin` Du`cate" quests, will appear and hand you a ring item called "Fastest Wheel."

Land Bopper mini-game:
Get nine lands in full view on the world map (which should resemble a slanted tic-tac-toe board). Hold L1 button for approximately four seconds to get the Land Bopper start screen to appear.

New Game + feature:
After successfully completing the game for the first time, load the game that is next to a music symbol. This will give you a "New Game +" feature. This game allows access to your old level, items, weapons, and instruments. When you start out in your home, go to the study (the room to the right down the stairs). Find the encyclopedias and go to the "Forbidden Tome".

Secret sword:
Have a saved game from SaGa Frontier 2 on the same memory card as the one used for Legend Of Mana. Enter the save screen, highlight the SaGa Frontier 2 file, then exit out of the save screen. Enter Bone Fortress and head toward the bridge where you fought the DeathBringer. There will be two skeletons at that location. When approach them, them you will fight DeathBringer 2. After defeating it, you will get the strongest sword from SaGa Frontier 2.

Shadow Zero mini-game:
Complete the then "Jewel hunter" quests (The Lost Princess, The Flame of Hope, Drowned Dreams, The Looking-Glass Tower, The Lucky Clover, Cosmo, Two Pearls, Alexandrite, Flourite, and Tear Drop Crystal). When those events are finished, go to the bar in Domina on Salamander day. You should see a Shadow Zero standing near the counter. Talk to him to play the game.