1. In the Cathedral, in the room with the fake Queen Leene, on the East wall, there is a secret entrance to a room where they worship Magus. There are a couple of items in treasure boxes here.

2. When collecting items from the sealed chests, take advantage of time travel. Go the future, and collect the item there, and the go to the past, and you can collect it again! You may have to go to the past first, and choose "No", when asked whether you want to open the chest.

3. Magus' ultimate equiptment is hidden in Ozzie's hidout. Check the south eastern wall in every room, and you will eventually find the hidden room. The equiptment is really good!

4. When fighting the Mammon machine, the Masamune can absorb the power of the Mammon machine, so it damages the machine, and heals Frog at the same time.

5. After defeating the first form of Lavos, you can use the time gate to go back to the end of time, where you can heal, before facing Lavos' second form. Use the bucket to reach him, and his first form will already be dead. "Did we do that?" - Lucca.

6. Fight Lavos through the Black Omen, after finishing the side quests, and after seeing the ending, restart the game. There will now be another option: New Game +. This allows you to start a new game, but with all your experience and items from a previous saved game. Thus, you can see the 14+ different endings of Chrono Trigger, by completing the game in different ways, and in different times. This only works if you've been using the save points, and not the Emulator's save feature.