Successfully complete the game, then return to the level selection screen. Press Right until the bonus Parappa levels appear.
Successfully complete all of the bonus Parappa levels.
Successfully complete all levels in the game, including the Lammy and Parrappa levels. Then, select the "Special" option at the title screen to display a new menu that allows all music to be played while all game characters are dancing under your control.
Load the game, then immediately reset the PlayStation when Lammy appears at the title screen. Then allow the game to reload, and a new menu will appear next to Lammy's guitar at the title screen. Use those options to customize the lyrics and notes.
| P1 Max Score (One Player Mode) | 80078D12 270F |
| P1 Max Score (Two Player Mode) | 801A3514 270F |
| P1 Always 'Rockin' Modifier | 80072790 00?? |
| P2 Max Score (Two Player Mode) | 801A31E8 270F |
| P2 Always 'Rockin' Modifier | 8007279A 00?? |
| Unlock All Stages | 301A58F9 0001 801A58FA 3F3F 801A58FC 3F3F 801A58FE 3F3F |
| All Stage Crowns | 301A58E9 000B 801A58EA 3F3F 801A58EC 3F3F 801A58EE 3F3F |
| All Effect Possession (Press Select) | 301A58E7 003F |
| Quantity Digits to Accompany Always 'Rockin' Modifier Codes | |
| 00 - Cool 04 - Good 08 - Bad 0C - Awful |
| Allows Game to Play in a Mod-Chip System [Note] | D01DA762 1040 801DA762 1000 |
| P1 High Score | 80071DBC 7FFF |
| P1 Max Score (Press Circle) | D007885E 0020 80071CD8 270F |
| P2 High Score | 80071DC6 7FFF |
| P2 Max Score (Press Circle) | D007885E 0040 80071CD8 D8F1 |
| Unlock All Stages | 301A5329 0001 801A532A 3F3F 801A532C 3F3F 801A532E 3F3F |
| All Stage Crowns | 301A5319 0001 801A531A 3F3F 801A531C 3F3F 801A531E 3F3F 301A5321 3001 801A5322 3F3F 801A5324 3F3F 801A5326 3F3F |
| All Effect Possession (Press Select) | 301A5317 003F |