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Playstation - Tetris Plus cheats

Select any stage:
Select the "Puzzle Mode" and choose the "Password" option. 
Press [Down, Down, Right, Up, Up, Right, Up, Up, Up, Right] twice, 
then push the X button. 

The color of the block should be Light Blue, Pink, Green, Light Blue,
Pink, Green. Start a new game to get access to the stage select option.

Fast walking professor
Complete a stage in puzzle mode. If the professor falls hold R2 to 
make him walk faster.