Game Key Revealer shows the product keys of over 2000 games.
It’s completely portable, takes up very little space, and can export keys to a text file or print them off.
Finds Keys for Games: Half-Life, Battlefield 2, Counter-Strike, Mirror’s Edge, Halo, Need for Speed, Dead Space, Crysis, Harry Potter, and many more.
Download Game Key Revealer v1.6.32
In addition to showing the product keys for a few thousand games, keys for nearly two dozen can actually be changed with Game Key Revealer, which could come in handy.