The following are known Action Replay Codes for Sonic Shuffle on SEGA Dreamcast (Dreamcast). These codes were also known as GameShark Codes and in most cases will work on both devices.

Device Compatibility: Action Replay & GameShark

999 Coins P1
407A1135
000003E7

999 Coins P2
39612ABC
000003E7

999 Coins P3
407A1132
000003E7

999 Coins P4
39612ABD
000003E7

Have inf coins for album
474A1135
000003E7

P1 has 0 Coins
407A1135
00000000

P2 has 0 Coins
39612ABC
00000000

P3 has 0 Coins
407A1132
00000000

P4 has 0 Coins
39612ABD
00000000