Let's not forget the venerable "Progress Quest," which is about as close as you can come to a 'zero play game' as opposed to a zero player game. In fact, PQ is an MMO, I believe, but it's one where everyone collectively grinds by running it in the task bar.

It sounds like Godville has tainted the purity of zero with actual interaction! Or perhaps it's more of a God-of-the-gapsville, where you are a deity who sits around and does nearly nothing except when needed to fill in certain gaps.

If a game plays in the forest and no one is around, did it really get played?

Jim, right, the Godville folks mention Progress Quest explicitly in their introductory blurb. But doesn't PQ also have this click-to-do-whatever sort of interaction?

Progress Quest requires a double-click to execute the application. That's all, if I remember correctly.

I believe it spawned T-shirts, coffee mugs, and even some fan fiction.