EyeToy - Play 2 - Platform: Playstation 1

Knockout: Easy win:
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Stand directly behind your opponent and beat them up. When they get ready 
for a punch, freeze and they will not hit you.

Move penalty machine in Football:
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After selecting "Football" at the game selection screen, select the penalty 
machine. When saving penalties, use the D-pad on controller one and move the 
Left Analog-stick around. This will move the penalty machine. You can now 
move the machine wide and make it shoot. To make it shoot, press X.

Table Tennis: Easy win:
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When you are hitting a ball back to your opponent, spin your forearms around 
very fast and you will not miss it.