Boing Boing has some details.

Yeah, I know… bad pic. Well, (shrug) it’s fast, anyway.

You know, I still have a few of the cheat books on that one. Earned a lot of beer with those books. I also have a wrist that looks a bit deformed. (Snort!)

What I found amazing is how well the cheat books worked with later emulations of the game that ran on the PC I’d found over the years. I must assume that they were using the same code.