The following are known Action Replay Codes for WarioWare, Inc.: Mega Party Game$! on Nintendo GameCube (GCN).

Master Code – Must Be On
X69U-9UG4-9FXAV
MJ18-YVFV-JT9EJ

All Multi-Player Games Unlocked
BCB6-1NQ4-AJPT2
5640-JR4Q-GCWG7

Single Player: Games: Inf Tries
TWN0-K7J5-HYQDJ
D51V-7GFZ-PNZP4
4AMX-JBZV-BX8DY

Single Player: Album: Inf Tries
M15B-QDD5-BT408
QUBR-NFVW-R9H27
2WPC-5DKR-T5BXP

Profile 1(Boy)-All Games/Movies/Etc
HPUX-V4V3-CF95P
9AJB-ZR3N-0BX3V

Profile 1(Girl)-All Games/Movies/Etc
YZXT-KZ4N-4P5H0
7Z1D-MQ2X-VKW5E

Profile 1-Album Beaten
N6DT-F1G7-KAYK3
1XUN-559Z-GRXBM
795R-07KK-9R82H

Profile 2(Boy)-All Games/Movies/Etc
YB47-JV44-H3EZ4
13WM-VABR-T09RR

Profile 2(Girl)-All Games/Movies/Etc
V4T4-6FHN-18VPT
ZYD9-Z9ZT-622U0

Profile 2-Album Beaten
8WV7-THXC-JC77J
9R9T-X5EF-0CYEU
PBNG-7ZQM-ZJ2AC