At the save game selection screen, select the save you wish to delete and press Start+Select on Controller 2. You will be given a Yes/No confirmation box before the save is deleted.
There are two points in the Factory in 2300 AD in which you must enter a passcode to proceed. The first point requires you to enter codes to control a crane, and the second requires you to enter the master password for the entire factory. The following lists those three such passcodes. Remember to press the buttons in order, not all at the same time.
There are 13 Endings possible in this game, depending on when you choose to fight Lavos.
After getting the Race Log to track your best scores in the bike race, race Johnny and attain a score of 777. Rx-xR will reward you with 10 Mid Ethers.
When on the black omen, you will come across a Tubster (Which at first looks like a tornado on the ground) Attack it and have Ayla use Charm, then escape, and go back through the door you came in and repeat.
When you exit Guardia Forest in the beginning of the game there is a bush near the exit that will move, when you try to communicate with it a strange creature should run out dropping a free shelter, after this leave the forest twords the castle but dont progress further, instead go back into the forest to where the bush was, you will be able to interact with it again thusly giving you another free shelter. There are a few enemies about but by going around tho where th enemies come out you should be able to avoid them. By using this cheat you can use the shelters to recover many times or sell them for 75 gold each.
Successfully complete the Black Omen dungeon and then beat the game to unlock new game+ it lets you play the game again with the levels from your previous games all items you had. you can go straight to lavos or beat the game again.
Go to the Hunting Range area and when it rains, the Nu will appear in one of its few possible spots. If you approach the Nu after the rain has stopped and press A as it is leaving, the Nu will make a screaming noise and continue to leave the screen. As it escapes into the jungle, it will initiate the dialogue, "You strong! Here! Take!" as if you had battled and defeated it, and then proceed to give you 3 each of Petals, Fangs, Horns, and Feathers. If it is your first encounter with the Nu, you will receive the Third Eye as well.
In Giants Claw or Tyrono Fortress there are a few switches. One activates a save point, one starts a battle, and one makes part of the floor disappear. Activate the save point, then make the floor disappear. Go to the top of the left hole, jump off and press A just as you go onto it. Save and continue. If done correctly, you should be able to save anywhere! Note: This affect will wear off if you turn the system off.
In the event where Lucca's mother gets caught in the machine, walk to the lower rightmost accessible portion of the machine, press A, and you will be prompted to enter a code to stop it.