In the Power Stone Collection Menu there is one mini game already unlocked. By obtaining enough medals in a mini game, you can unlock the other games:
Unlockable
How to Unlock
Ayame's Shuriken mini game
Obtain at least 500 medals
Gunrock's Slot mini game
Obtain at least 1000 medals
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Unlock Bosses in Power Stone 1
Added on
2008-01-27 at 21:05:55
Unlockable
How to Unlock
Final Form Valgas
Complete the game with Valgas
Kraken
Complete the game with all characters (Except PS2 Characters)
Valgas
Complete the game with Kraken
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Characters for Power Stone 2
Added on
2008-01-27 at 21:05:01
These character unlocks are exclusively for Power Stone 2:
Unlockable
How to Unlock
Kraken
Beat the game as Falcon in 1 vs. 3 mode
Mel
Beat the game as Pride in 1 vs. 3 mode
Pride
Beat the game as Falcon in 1 vs. 3 mode
Valgas
Beat the game as Kraken in 1 vs. 3 mode
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Unlock Original Special Weapons From Power Stone 1
Added on
2008-01-27 at 21:06:30
Complete the game once with any character to unlock all the original secret weapons from Power Stone One:
Unlockable
How to Unlock
Machine Gun
Beat Game Once
Nyoi-Bo
Beat Game Once
Power Shield
Beat Game Once
Ray Gun
Beat Game Once
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Bonus PSP Items
Added on
2008-01-27 at 21:04:10
Finish the game with certain characters to get "their" item. Works on both games, however, on Power Stone 1, Pete, Gourmand, Julia and Accel do not unlock their items:
