My sister and I received a great gift on the Christmas Eve night in 1998. It was a new Nintendo 64 system with a atomic purple controller and a gray controller. Along with the system we got Monopoly(sealed), Mario Cart 64(cart), and F-Zero X(sealed). F-Zero X turned out to be our favorite game and still is my favorite to this day. I decided, it being my favorite system, to make an attempt to collect all the games for the system. This is a great system, in my eyes, to collect for because it's an easy system to collect for. There are just under 400 games and all the US released games are rather easy to find. In fact the rarest game is probably the sculptors cut of Clay Fighter which goes for about $50, which isn't even that hard to find. Below are some stats and photos. I crossed out DK64 and Zelda MM on the gray/colored list because the gray carts of those games are near impossible to find. If you think my stats are incorrect let me know!(My totals at the very bottom) I'll update with photos as I get games, so if you care then check back for updates.
USA- 296 Games
11 Games had both a gray and colored cartridge: 007: The World Is Not Enough Army Men: Air Combat Bassmasters 2000 Donkey Kong 64 Hydrothunder Ocarina of Time Road Rash 64 Rugrats in Paris: The Movie Sarge's Heroes 2 Scooby Doo! Classic Creep Capers Tom Clancy's Rainbow Six Turok 2 Zelda Majora Mask