(1) Another computer game that provides hours of simulated death and carnage, in gory squishy detail, for hundreds of hapless simulacra under your irresponsible control, is Bungie’s Myth series — which I highly recommend. (Myth I and II are long out of production, but you can find them cheap in many computer stores’ discount bins.) However, as in many games, the combatants don’t really express any suffering or aversion to death. They move and fight and charge into battle just the same as always right up to the moment when their health falls below zero, and they quickly expire.
I’m sure that’s not an accident. As other posters pointed out, a game in which the characters did suffer and scream, or beg pathetically for their lives, would cast the human player as a psychopath. Most of us don’t want to be made to feel that way, especially in a game we bought with our hard-earned cash and are using for recreation. And I’ll bet most parents don’t want to overhear such sounds coming from their teenaged boys’ bedrooms, where these games are more commonly played. (At least I hope “most” people are like this. I don’t have a supporting study to back it up I’m afraid.)
However, the characters in Sims or Myth are more like chess pieces with some special effects. I know I’m fond of Myth’s impish grenade-tossing dwarves and their deranged cackling, but I also know that they’re all identical, they have no history or future, and that the game will generate another batch of them whenever I restart the level.
(2) On the other hand, there’s the game Rune, a first-person 3D action game I’m also fond of, but which includes a feature that made me cringe with remorse the first time I encountered it.
You are a Viking in a medieval world of magic and demigods and ghoulish creatures. In several of the levels, you’ll find yourself running down castle corridors holding a flaming torch for a light source (and occasional weapon). The evil masters of the castle have hung some human prisoners upside down from the corridor ceiling. There’s nothing you can do for them; you just have to run by and leave them hanging. They are part of the scenery.
This by itself isn’t so bad. It adds to the game’s creepy atmosphere. But if you bump up against a prisoner while holding your torch, no matter how briefly, you will set him on fire and he then howls in agony while aflame. Thankfully he doesn’t convulse; I don’t think I could take that. As it is, I always apologize before moving on. That’s just the way Momma raised me.
(3) A good book that explores “artificial suffering” a bit is The Mind’s I by Hofstadter and Dennet, which (wouldn’t you know it) includes an excerpt from Lem’s Cyberiad as a starting point for one chapter’s discussion. The book is full of philosophy essays and short stories on artificial intelligence in general, how it might be built, how you’d recognize it if you found it, and the ethics of dealing with it. The book is a thought provoking read, even if it never answers anything very concretely. Consciousness is a pretty slippery topic after all.