Be cautious of websites offering "free" registration keys or "serial readers". These often contain malicious scripts that can compromise your personal data or bank security. How To Add Cheats to MAME (Newer Builds) -- MAME Tutorial
Some sites sell CD/DVD collections of ROMs bundled with an older MAME version and claim you need a “registration key” to activate “extra” features. This is a scam. The key either:
The only secure and legal way to obtain an Extra MAME registration key is through the official Extra MAME website .
: Keys are typically sent via email immediately after a successful transaction.