If it’s playing the old games through DosBox emulation, you could play the games in a window and have the PDF open in Acrobat. Or maybe they will be nice and disable copy protection.
That link with the review confirmed everything I suspected. I felt like a jerk making all of these assumptions and being pessimistic about the releases before they were even out, but I hate to say I was right. I could think of at least a dozen things I would’ve done to add something more to the releases. Actually it’s even worse than I thought. They don’t include the original EGA games if there was a remake?