Sega Genesis Collection - Phantasy Star 2 Cheats, Hints and Glitches (PSP)

The game's prologue says that somewhere deep within the Andromeda Galaxy lies the Algol Star System. The parent star, Algol (referred to as "Algo" by this point in the timeline), has three planets orbiting about it. First is Palm (formerly "Palma" in the original Phantasy Star), the home of the government. Governors, treasurers, and great thinkers dwell here in great ivory towers, away from the hubbub of everyday life.

Next is Mota (formerly "Motavia"), the shining jewel. Once a dry desert planet infested with ant lions, Mota has been transformed into a blue and green tropical paradise. Domed farms grow crops, and the water is regulated into dammed rivers. Life on Mota is sweet, peaceful, and easy. The people have everything they want, and do not need to work. Farthest out is Dezo (formerly "Dezoris"), the ice planet. Little is known about this mysterious and dark planet.

One thousand years have passed since Alis and her friends liberated Algo from the evil Lassic. Algo has since prospered under the care of a giant computer called the Mother Brain. The Mother Brain regulates the Climatrol Tower, the Bio-Systems Lab, and all other things that provide whatever the Mota people need. (Wikipedia)

Cheats

Slow motion:
Pause game play while in the countryside by holding Start + B. Keep B pressed to move in slow motion.

Pause game play, then press C to advance one frame at a time.

No opponents in dungeons:
Continuously press C to display the control menu and B to close it while holding the D-pad in any direction.

Gameplay Hints

Shortcut:
After leaving the second town (the one the bandits destroyed), go west along the bottom of the isle to the side of the tunnel. The side of the tunnel is a secret entrance and saves either a long trip back, or 60M for the teleporter.

Zema slowdown:
In the town of Zema (a resort town), after the biolab, the people are all tourists or elderly, and will habitually block the bridges and paths in town. Patience is a plus.

Visit Zema and Kueri at the same time:
Due to the fact that the monsters in and around Zema and Kueri are very similar, the game allows for both cities to be visited at the same time. Use this to get better armor and weapons, get and level up Kain the wrecker, and level up your party twice as much, making the dump tower (Roron ) much easier to defeat.

Easy Ceramic Knives:
When Rolf is at level 5, he needs to level up to go to the abandoned building where the "scoundrels" are hiding. The knives he is using are almost useless. The Ceramic Knives in the second town have a hit value of about 25 points for most enemies, but cost 2800M. To buy these knives, build your characters EXP and M around the abandoned building. The monsters here have a value of about 80 to over 100 M most of the time, allowing the knives to be bought just about the time the characters are ready for the abandoned building. This also allows you to buy Rudo's Sonic Guns and Shotgun.

Amy with knives:
Contrary to other sources, Amy can use knives. To best suit her abilities, pair the best knives in the Aria with her best shot weapon. Also use knives until a decent shot weapon becomes available.

Saving money:
When the doctor charges large fees to heal, go to Paseo (the first town), where the doctor only charges a small fee. You will also be in Paseo if you are using the Visiphone and the Ryuka Technique, or retrieving Shir the thief when she steals something.
Stealing items:
When you get Shir the thief and she is leveled up properly (about level 10) take her to shops. When the text finishes appearing on the screen, press B(2) to leave. Repeat this until Rolf says that Shir is gone. Go back to Rolf's house and she will be there, and the item she stole will be in her inventory. Use this trick in the Central Tower in the first city for the Visiphone, and in the second city (the burnt out one) for the Fire Staff. Shir often finds rare items, but you must have patience. She only steals at random, and has a knack for grabbing daggers and other cheap items first.

More battles:
When walking around the countryside, enter battles to gain experience points and Meseta is simple. To do this, walk around in circles, lines, or no desired pattern. You will eventually get placed into a battle.

Gliches

Catman:
Look closely at the Catman on Uzo Island. It is actually a shapely Catwoman.

Final boss battle (spoiler):