Perfect Balance was created in 2000.
There is no cheat for perfect balance in Tony Hawk Pro Skater 3. You much go into Career mode and finish it. Once career mode is completed perfect balance will be unlocked.
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Perfect Machine was created in 1988.
The Perfect Circle was created in 1997.
Perfect Combination was created in 1983.
The Perfect Nanny was created in 1964.
The Perfect Son was created in 2000.
The Perfect Flapper was created in 1924.
A Perfect Circle was created in 1999.
Perfect Relations was created in 1992.
Perfect Creature was created in 2007.
Perfect Pie was created in 2002.