If you've ever opened up an Atari made 2600 game, you probably saw a masked rom with 24 pins soldered down to a green board. That is without a doubt the most common way Atari made their games. Later games were manufactured by gluing the chip directly to the board, which was a common prototyping method used by a lot of manufacturers to create games quickly. I am lucky enough to own a bunch of prototypes, in fact I have Bugs Bunny, Dukes of Hazzard, Donald Duck's Speedboat Race, Peek-a-boo, The A-Team, Garfield, Monstercise, Stunt Cycle, and Tempest. I have others but this list will do. Of these, all but Peek-a-boo, A-Team, and Stunt Cycle are the glued down style. The ones with eproms I got from Best Electronics and frankly I could easily "fake" them. They came on a T-shaped board that has a pair of sockets containing 2532 eproms. I know they are legit because Brad is legit, but I could be suspect had I gotten them anywhere else. What I futher suggest is that for example my Dukes of Hazzard is only a prototype because it was not released. Had Atari done a full production run of the game they would likely all look just like the one I own. I really think Atari had a run of the games made up and decided not to release it. But if they HAD released it, then this batch of boards would have gone right out the door. There are some games mass produced with the glue down style instead of the masked rom. Pac-man is one. I think Atari went with this instead of the typical masked rom because they wanted to get a LOT of them producted quickly. Same with ET. However there are plenty of Pac-man and ET also produced with the masked rom, which probably came later or from a different plant. In any case, you may easily own one of these first runs and not know it. I have for example just a few of the SwordQuest series that are glued down and by far most all of them I open up are a masked rom. Some folks think that's silly but I don't know many people who have opened up as many of these as I have (as of 2018 I had built 26,000 games for people, most all using Atari style cases....). If you don't care for my theory, well, when you have opened as many carts as I have I just might take you seriously. Here are some samples of what they say on them: Text: Game: Where Made: Made by: MA6064 Non-US PCB - Fire World #1 - Philippines - PCI C3E008 8250 - Fire World #2 - Thailand - Hitachi MSM2932-14K - Pac-Man - Taiwan - Oki AP83-001 3649 - Joust - Singapore - PCI AP83-00 3616 - RS Soccer - Singapore - PCI C20004 - Defender - Singapore - Hitachi Ap83-00 3648 - Jungle Hunt - Singapore - PCI Depending on the maker, they look very different! The Hitachi ones have a black square kind of glued down with some white cement of some type. The PCI ones have a round, melted down glob that presses through the board or they have a BIG black rectangle, also melted throught the PCB. Finally the Oki ones are tiny, ceramic looking squares that are blobbed down by some black epoxy looking stuff. My Dukes of Hazzard has the Hitachi style to it. Here is a picture of a slew of them on my 2600. I also have opened up three cartridges that the plastic case is the prototype - it is stamped right on it. So Atari did ship a few things that were what we would consider prototypes right along with the main runs of carts. But again there are those who think this isn't possible, that Atari would never do that. Sigh.