5000-0000000-0000000-5068 is a widely known generic key for the original base game.

"How to Install and Play Medal of Honor: Allied Assault with a CD Serial Number"

: Electronic Arts occasionally lists the game on their storefront, which also bypasses the manual key entry system through modern digital rights management (DRM). Technical Solutions for Lost Keys Registry Check

HKEY_LOCAL_MACHINE\SOFTWARE\Electronic Arts\EA Games\Medal of Honor Allied Assault\ergc Compilation Packs : If you have the 10th Anniversary Bundle , the serial numbers for the base game and expansions ( Breakthrough ) are often distinct and listed together on one insert. Note on Key Generators: