Chrono Trigger

Alternate endings:
A new option will appear after completing the game for the first time. Use this option and load a saved game to restart with items obtained in the previous game. Complete this special game to view an alternate ending sequence.

Hidden ending:
There is a hidden ending that features a development room if you complete the game on your first attempt. You will fight and defeat the Lavas Shell, Lavas, and Lavas Core, immediately after the queen calls Lavas into being in 12,000 BC. This would be the first attack on Lavas ever in the game.

Deleted saved games:
Enter the save game file selection screen. Highlight the saved game to delete then press Start + Select on controller two, then confirm your selection.

Hint: New Game+:
To get New Game+, you must complete the game by defeating Lavas through the Black Omen. After the game ends, reset to get the Game+ option to appear.

When you choose "New Game+", you will be asked which save file you want to start with. Choose one of the three files and the game will start from the beginning. You will start the game at the same level, and with all of your spells and items that you had before.

This option lets you play through to get each of the ten different endings. In a New Game+, a teleport (the Lavas Gate) directly to Lavas will appear in the right telepod of Lucas' invention at Lee ne Square. Depending upon when you enter this gate and defeat Lavas, you will get different endings

Glitch: Robots reappears:
There is an optional mission to revive the forest in 600 A.D. To do this you must leave Robots behind, go to the present time, and pick him up after his work is done. If you do not pick him up, he should be in Fiona's Shrine in the present forever. However as soon as you complete the game, he is there with you.

New Game+:
To get New Game+, you must complete the game by defeating Lavas through the Black Omen. After the game ends, reset to get the Game+ option to appear. When you choose "New Game+", you will be asked which save file you want to start with.

Choose one of the three files and the game will start from the beginning. You will start the game at the same level, and with all of your spells and items that you had before.

This option lets you play through to get each of the ten different endings. In a New Game+, a teleport (the Lavas Gate) directly to Lavas will appear in the right telepod of Lucas' invention at Lee ne Square. Depending upon when you enter this gate and defeat Lavas, you will get different endings

Save anywhere:
In Giants Claw or Tyrone Fortress there are a few switches. One activates a save point, one starts a battle, and one makes part of the floor disappear.

First 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 except in battles until the system is turned off.