At Ozzie's Fort in the room where Ozzie tries to get you to get the chest, keep against the walls and you should find a hidden small, thin hallway (its covered in black until you discover it.) The chests there have some of Magus's best armor and also his best weapon.
Hidden Room In Yakra's Place
In Yakra's Place in the room with the fake queen, king and soldier go in and kill the fakes, then run against the right and you should find a room with monsters singing to a magus statue. Right next to the statue there are two treasure chests. Also you can talk to a monster after getting the chests. Talk to a monster and you will fight them.
New Game +
After beating the game once a new option will appear. If you select it and load one of your saved games you'll restart with all the items you had in the previous game. If you beat the game this time you'll get a different ending.
Power Up For The Future
The chests work logically with the timeline. If you get a chest in the past it will not be there in the future. But, if you get a chest in the future and go back in time the chest will be there with a different item.
However, instead of simply getting the sealed chests from future to past, go to the past, and when you SELECT A SEALED CHEST choose NOT to take out whats inside. THEN go to the future and get that same box. Whatever was inside will become something MORE POWERFUL because you said NO to it in the past.
Heres what the equipment will become in the future:
Others objects may power up as well, so check every chest in this manner.
Rescue Lucca's Mom
There is a way to rescue Lucca's mom by entering a strange red portal. Here is how you get the portal to appear. Once you get near the end of the game, go to 600 a.d. Next to Fiona's House you should see a whirlwind in the sand. Make sure you have people with you who have water or ice magic. Once you get near the end of this area, you will have to fight a skeleton similar to the one on Zeenan Bridge. You must use water or ice magic to weaken him and then attack him. After you defeat him, go back and talk to Fiona. After you talk to her, go outside and put Robo in your party. Talk to Fiona again and Robo will ask if he can stay and help Fiona. Say yes. Go back outside, and you should see Robo seeding the ground and doing other farming stuff. Fly back to 10000 a.d. Where there used to be a desert, there will be a large forest with a cathedral in the middle. Go inside the cathedral, and near the top, on a pedestal, you will see rusty old Robo. Here comes the red portal part. After you pull Robo down from the pedestal, you and the rest of your party will be talking in the forest. After the party goes to sleep, you will be able to control Lucca. Go to the right side of the screen, and you will enter a clearing in the forest. There will be a portal there. Enter it, and Lucca will be sent back to her house in the past. After a little bit of talking, Lara will begin to get sucked into the machine. Run downstairs through the middle door. It should bring you to the left of the machine. Go up to it, and it should ask you what the password is. After that scene goes away, press L-A-R-A in that order on your controller. The machine should stop and Lara should be safe. If you beat the game after doing this, rather than Lara sitting at the parade, she should be up dancing with Taban.
Secret Nagaette Bromide
When you first go to the cathedral in 600 A.D, go to the first room on the left stairway where there are the three chests. Go over to the drawer and open it, and you will get the secret Naga-ette bromide. Don't know what it does, but it is a secret. Be ready to fight once you get it.
When you are in your jail cell, take the bag, drink from the cup and save it if you want. Wait in the cell until the day of the execution. When you are about to be beheaded, one of your team members(the one who built the telepods at the fair) will come and shoot all your enemies and save you with her new gun the Zonker 38. Now, the only enemies that should be alive are the big shield things.
Skip Guard Fights
When you are in the prison for kidnapping Marel, if you break out before Lucca saves you you can avoid the fights that have Guards in them; if you sneak up behind them, and push A Crono pulls out his sword and knocks them out. When they are passed out if you push A next to them you get a Mid Tonic.
God Of War
To defeat the god of war again you must use double or triple tech. on him when your level is between 17-22 you need to use the double tech but if you have a triple tech. use it.
Hint: Silver Points
To get 20 free Silver Points, talk to the man in the tent near the racers and bet on one racer. When the racers start, run in front of everyone except for the racer that you bet on. This will slow down the other racers and allow your racer to win.
Note: The following trick requires controller with an auto-fire feature, to allow Silver Points to be collected quickly during the Millennial Fair. First, reach the point in the game where you can switch all the characters in your roster around. Go to the Millennial Fair in the year 1000 A.D., with Magus, Marle, Robo, or Frog in the first slot and Chrono, Lucca, or Ayla in the second or third slots. Go to the pop chugging contest, activate the auto-fire, and walk up the man that runs the contest. Your first character should stay in place while your second or third characters chugs. You can now leave the game unattended as your Silver Points increase.