When prompted to enter a new name for Robin, press Select(3). Enter a new name for Robin, and you can now enter a new name for Gerald, Ivan, and Mary. Press Up, Down, Up, Down, Left, Right, Left, Right, Up, Right, Down, Left, Up, Select to enter new names for the other remaining characters.
Easy experience and gold
Walk outside towns and battle monsters, but do not wander too far away. Use Herbs, Nuts, or anything else that cures your characters. When you run out of magic to heal or need to buy more Herbs, return to town. Go inside the inn or item shop and get cured. Note: You may want to do both. All the gold that you received from battle goes towards curing yourself, but is worth it since you will gain levels faster. Repeat those steps until reaching the desired level. Note: You may want to repeat this trick when you see a change of monsters levels
Easy Raise to Big Summon Attacks
To easily have Judgment, Meteor, Thor, or Boreas before you battle a boss, Press A and select Djinn. Go to Issac, and press R on the Djinn you want on standby. Do the same with your whole party. Then battle! On the first turn you can use these 4 attacks. All toeghter about 3000 damage can be done.
Extra missions
Collect all djinn and when you finish the game wait untill the credits end and then you will be able to finish 3 more missions
The mysterious sunken ship
When you get to the top floor of the venus lighthouse !SAVE! but in a different file....(all will become clear) and when you beat the fusion dragon babi will give you the black orb so u can raise the sunken ship! (the one you saw earlier on in the game)
Beat Saturos and Menardi
All you have to do is SAVE right before you go down the shoot. Then walk around and raise your partys level. Raise their level up to at least 30 each or if you want more. Try not to get cusred or haunted and save because you have to start all over again. You would have to go to a healer and heal yourself. So good luck you will need it!
Ninjas and Samurais
this will only work if you have all 28 djinn.
first give all fire djinn to isaac and all earth djinn to garret. then trade 4 fire djinn for 4 wind djinn from another party member. isaac will become a ninja. then trade 4 water for 4 earth djinn and garret will become a ninja. this helps alot because you will get cheaper versions of earlier psynergy that have the potential of 500+ damage with moves like annialation and death plunge if you are at higher levels. if not, you can still get 300 damage at around level 35.
to be a samurai, trade back so isaac has 4 fire djinn and 3 wind djinn. do the same with garret so he has 4 earth and 3 water djinn. they will become samurai. they will have less powerful psynergy but will have much higher HP and stats.