Do you think Imaginal would count as a personal game? Because if so, I think it would be a pretty good example.
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I think it would be limiting to define personal games too tightly - if you feel that it's one, then it is :) I checked Imaginal out, I love how it gives players a space to reflect in; the gameplay isn't really that important imo, it's just there to give you something to do while you think about the questions that pop up. I'd say it's definitely personal. Thanks for the heads-up! :)