After unlocking the following pictures, select them in the indicated order to unlock the corresponding bonus. If you entered the code correctly, you will hear a sound.

160 (Chaotix logo from the top): 146, 145, 144, 142, 143
180 (Shape of a GEM): 162, 163, 164, 166, 170, 172, 174, 178
200 (Order pictures appear in the credits): 12, 23, 54, 10, 22, 25, 39, 56
218 to 219 (7 Metal Sonics): 10, 25, 39, 40, 56, 93, 160
220 (8 Sega logos): 18, 106, 118, 136, 137, 138, 139, 140
260 (Fighters CPU order): 5, 4, 9, 8, 3, 6, 7, 2, 10, 11
281 to 285 (6 Holiday): 110, 112, 122, 130, 132, 137