I love what I'm seeing from this game so far, but I'm having an issue with viewing the printer-friendly version on an e-ink device - I did try the regular pages version to see if it had the same issue and it does on a different page, but is overall much more difficult to read on a black-and-white device.
On the page titled "Exploration", there is a black square over the upper right corner of the page when viewing on my e-reader - with the exception of the chunk that has the graphic of a taped bit of paper going through part of it - though not when viewing it on my phone. When I looked at that same page in the regular pages version of the pdf, it shows a ring like a spilled mug might show, though that doesn't appear to have a square-shaped part of the graphic. But maybe it's confusing enough to the e-reader that it can't figure out how to display it. There's a black rectangle in the pages version on the "Reagents Explanation" page, in the middle of the right side, which, again, doesn't seem to correspond to a graphic.
I guess it's probably an issue with how the colors of some subtle graphics are interpreted by the e-reader, which isn't necessarily a bug so much as an incompatibility. Please don't take this as a demand, but I'm wondering if there's any possibility of a version that doesn't have any graphics that overlap the text, or if easier, one without any graphics. I don't really care if there are some pictures here or there that don't display correctly (though all the other images on the printer-friendly version display basically fine) but I can't read the text on the upper corner of the exploration page on that device because of the square.
It's ultimately a want more than a need, because I can pull it up on my phone, but it's a much more comfortable reading experience on an e-ink device due to the fact that it doesn't have any glare and looks essentially like a physical page. I like to do journaling and art at the park or just sitting outside sometimes, so it's a lot nicer to use that.
Regardless of whether or not this is something you can/want to do, I appreciate the work you put into this game, and the fact that you were willing to put it into a bundle that made it affordable for me. Just reading through the booklet has put a lot of story ideas in my mind.
Edit: I went back and looked at the print-friendly version on my phone and realized that the mug ring image isn't on that version, so I'm not actually sure why the e-reader was displaying the exploration page incorrectly - maybe there's some invisible image in the pdf that didn't play nicely? So I'm not sure whether a pdf with fewer images would solve the problem. A text version might, but if that's not something you're able/willing to do, I understand.