Games For The Atari and The Musical Atari both use MyPicoDOS to boot, and the disk images are MYDOS double density. Of course, individual files can be pulled off without any problem by booting to MYDOS.
The Atari User games disks use my own little menu program that autoboots. These disks use SpartaDOS, and as such, the menu program uses a couple of SpartaDOS functions from Basic. The original programs as printed in the magazine are untouched however.
On the AU disks, there are also files that are not referenced in the menu program. These will be ancillary files, such as source for a game that ends up as a XEX, and other such things. I've left them on the disk for completeness.
With the menu program, it's quite simple to use; simply press the letter (A-Z) of the game you wish to load. Press space to display the next page of games (if any) and press Control and the letter of the game to view instructions for that game (if any). The program was entirely written by me with the exception of some 80 column display code that was used from an issue of Atari User. This is used to display the instructions. I'm not a fantastic programmer, but the program is fairly compact, neat and simplistic.
With all that said, here are the images. Enjoy!