Complete the designated in-game tasks to unlock these secret guitars in the shop.
| Unlockable | How to Unlock |
|---|---|
| Fish Guitar | Beat Easy Mode |
| USA Guitar | 5-Star every song on Easy |
| Casket Guitar | Beat Medium Mode |
| Viking Guitar | 5-Star every song on Medium |
| "Snaketapus" Guitar | Beat Hard Mode |
| Eyeball Guitar | 5-Star every song on Hard |
| Battle Axe Guitar | Beat Expert Mode |
| "The Log" Guitar | 5-Star every song on Expert |
At the title menu, enter the code.
| Cheat | Effect |
|---|---|
| Yellow, Yellow, Blue, Yellow, Yellow, Orange, Yellow, Yellow | Performance mode (Guitar God Mode?) |
| Orange, Blue, Orange, Yellow, Orange, Blue, Orange, Yellow | Hyper Speed De/Activate |
| Y,Y,B,O,Y,B | Air Guitar |
| O,Y,O,O,Y,O,Y,Y | Flaming Head |
| B,O,O,B,O,O,BO,O,B | Horse Head |
| B,O,Y,O,Y,O,B | Crowd has Eyeball Heads |
| O,B,Y,Y,O,B,Y,Y | Crowd has Monkey Heads |
| B,Y,O,R,O,Y,R,Y,R,Y,R,Y,R,Y | Unlock All (NTSC Version) |
Enter these at the Game mode selection menu:
| Cheat | Effect |
|---|---|
| Orange, Orange, Blue, Yellow, Orange | Player uses Air Guitar |
| Blue, Yellow, Orange, Blue, Yellow, Orange | Venue Disappears |
| Blue, Orange, Yellow, Blue, Blue | Unlocks Hero Guitar |
| Blue, Orange, Yellow, Yellow, Yellow, Blue, Orange | Crowd has Monkey Heads |
| Orange, Yellow, Blue, Blue, Orange, Yellow, Blue, Blue | Crowd has Skull Heads |
| yellow, blue, orange, orange, blue, blue, yellow, orange | Rock meter will always stay green |
| Yellow, Orange, Blue, Blue, Orange, Yellow, Yellow | Unlock All |
