Power Spike Pro Beach Volleyball - Platform: Gameboy Color
 
Power Serve
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Enter PWRSRV as a password. Then jump and press A, B(2), 
A while serving, 
 
Double Handed Blast
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Enter DBLBLST as a password. Go to the net, and when 
your partner passes the ball to you, press A(2). 
 
Spin Fury
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Enter SPNFRY as a password. Go to the net, and when 
your partner passes the ball to you, press B(2), A.
 
360 Killer Smash
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Enter KLRSMSH as a password. Go to the net, and when 
your partner passes the ball to you, press B(3), A.
 
Activate all combo moves
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Enter CMBMVS as a password.
 
New York level
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Enter NWYRK as a password. The New York level is now 
unlocked in single match and multi-player modes.