Slot Machine a.k.a. Slots (Atari VCS, 1979)
I theorize that in the mid 1970s, the U.S. Department of Defense had conducted experiments on non-violent methods of torture. Back then, apparently, violent methods of torture were frowned upon. I’ve heard that, in some circles, they are still frowned upon, even today, but I digress.
So, the DoD went to Atari and said, "We want you to make a simulation that will suck the very life-energy out of the person interfacing with it. We want it to be simple to use, and we want it to be so awful that prisonersguests will actually request torture in exchange for not being forced to suffer through this activity. That way we'll have their permission to torture them and can extract some real information."
Atari experimented with a few ideas, (one of which became Hunt & Score), but the actual program they selected to demo to the DoD was considered to be “too life-draining.” One high ranking official was quoted as saying, “That’s enough! I don't even have the energy to puke anymore.”
However, the Department of Defense, though no longer interested in what Atari had developed, were impressed and they began to inquire about tank sims. That's another story, possibly for another time.
Atari, was left with this "worse than torture" program into which they had invested dozens of dollars with no way to recoup their expenses. Finally, some programmer, apparently with a history of abuse, said "Hey, we can make a game out of this!"
And that's how Slot Machine came to be.
Really, that's all I have to say about it.