Ninja star mode
 
 At the stage selection screen, hold R1 + R2 and select a stage to 
 play the current level in ninja star mode. In ninja star mode, the 
 button icons are replaced with ninja stars, which are wild cards.
 
 
 
 
 Skip to song
 
 At the stage selection screen, hold L1 + L2 and select a stage to 
 skip straight to the song.
 
 
 
 Blue hat
 
 Successfully complete the game to unlock a blue hat for Parappa.
 
 
 
 
 Pink hat
 
 Successfully complete the game with the blue hat to unlock a pink 
 hat for Parappa.
 
 
 
 Yellow hat
 
 Successfully complete the game with the pink hat to unlock a yellow 
 hat for Parappa.
 
 
 
 Song test
 
 Successfully complete the game with the yellow hat to unlock a new 
 dog house that allows you to listen to any song in levels that you 
 finished with a cool rating.
 
 
 
 Bonus stage
 
 To unlock a bonus stage after any regular stage, finish the stage 
 with a good score (near 1,000 points). You will be brought to Chop 
 Chop Master Onion Head who gives you a fun, yet somewhat repetitious 
 bonus game between the end of the stage you just finished and returning 
 to the stage selection map.
 
 
 
 Secret song
 
 Go though the opening FMV sequence to the part where PaRappa is 
 writing his name and all the characters appear. Wait until a demo 
 of the game appears. Go though the demo and the opening FMV sequence 
 will appear again. Go though that and go though the part where PaRappa 
 writes his name and wait again. Instead instead of them showing 
 a demo, the colorful noodles will appear on the sides of the screen 
 and the song will start playing.
 
 
 
 Sunny's music video
 
 Successfully complete the game with the yellow hat, then do the 
 "Secret song" trick. Go though the whole song, then a music video 
 with Sunny singing her intro music on stage will begin.
 
 
 
 Control time of day
 
 The game places Parappa's neightborhood at the same time of day 
 indicated by the PlayStation2's time setting. For example, if you 
 set the Playstation2's time to 11:30 a.m., it will be bright and 
 sunny in the game. If it is 7:00 p.m., it would be sunset. If you 
 set the time to 10:30 p.m. it will be dark outside.
 
 
 
 Game Shark Codez: 
 
 Master Code (Must Be On):
 0E3C7DF2 1645EBB3
 0C075FD3 F891B6FF
 
 Rap Cool:
 2C0FC1EB F8FCFEFE
 
 Rap Good:
 2C0FC1EB F8FCFEF1
 
 Score is 9999:
 2C0FC107 F8FC270F