F-Zero GX for the GameCube, released back in 2003, was not only a breathtaking future day at the races on your home console but the game disc itself hides an arcade Easter egg in the form of F-Zero AX. When F-Zero GX originally came out F-Zero AX came out simultaneously and if anyone was lucky enough to find a F-Zero AX machine at their local arcade they could put their GameCube memory card into the machine and get some bonus arcade-only tracks to play at home.
Just last year some players discovered that with the use of the Action Replay cheat disc and a couple of codes they can unlock the fully playable version of F-Zero AX. Retrocollect just published the Action Replay codes on their site and the codes can also be found on an article on CVG as well as a video showing how to enter the codes and what you can do once they have been entered.
CVG said that once the arcade version is unlocked racers can go through the AX-only menus and play timed-arcade modes exclusive to the arcade version. Also, if you would rather continue reading this you can find the codes here as well. The codes can be found below.
de to access AX [PAL]
Z60V-MZG0-VRAQ2 3DFJ-55T9-J5J7P NBCW-U1NV-0JDJG HK7K-0RFW-FNQ8Y PF4U-P5D0-862X1 9D4X-PVXV-R3FNV Q7PM-1678-XE7FW UAB4-HZ2F-AW6X5 T6UV-03PE-1H26C BN71-WCD5-DYDNW FHW5-F3D3-B2UZ5 NJR5-FE19-GQ851 5FRQ-P6M4-096F3 85KV-QPJD-4U999 VXM8-U9Y8-URZPR VZFH-H43M-5N6E3 G71V-JPGY-BPDDZ GUZD-V5KT-UBKA8
Code to access AX [NTSC-U]
61TA-AXPK-UAV9E EHJV-6U30-2DTVE NBCW-U1NV-0JDJG HK7K-0RFW-FNQ8Y PF4U-P5D0-862X1 7HUZ-2PJY-J5TTU Q7PM-1678-XE7FW YW2J-AUVE-R79V8 T6UV-03PE-1H26C R91R-1A6J-ZXN30 1GHM-VQ7W-7HBWW
Source [CVG ]