Your aim, as Pilgrim, is to reach the Heavenly City, learning as much as you can on the way.
Inspired by The Pilgrim's Progress from This World to That Which Is to Come; Delivered under the Similitude of a Dream, written by English preacher John Bunyan and published in 1678.
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May pass for a scholarly text interface on Bible studies (or a literary one on the original poem), but hardly for an adventure, as it's far removed from the usual conventions.