This game contains at least one sly reference to one of Eric’s books, All Good Things. Traditionally references like this in a game are called "Easter eggs", but we need to come up with a better, more Witness-friendly phrase to use.
It should preferably be a phrase that references a hidden thing that can be found if searched for, and it should be a biblical or theocratic term. Like, a "hidden treasure" (Job 3:21) or a "pearl" as in the pearl of high value (Matt 13:46), or "teraphim" like the idols Rebekah hid from her father (Genesis 31:34).
Ok, maybe not that last one...
“Hidden pearl” - Mat 13:46
What about "buried nut"? (hinting at what squirrels do with their food reserves, and sometimes forget them, so they remain buried in the ground, and sometimes a new plant sprouts from one of these)
Yeah, "Easter egg" isn't a good look. Perhaps "secret" is best?