Visual novels, and interactive fiction come to mind as things that are video game adjacent but aren’t necessarily games. Most of the first category I’ve encountered are either porn, horror, or… both – though they can be about anything the author wants to write about, of course, and the relative accessibility of the medium means people have pushed it in a lot of directions even though it’s kind of niche.
Interactive fiction includes things like text adventures and choose-your-own-adventure books. Most of the computer-based ones I’ve encountered involve traversing a node-graph of locations, manipulating items, and solving puzzles – though the gaminess varies a lot depending on the specific title. They’re even more niche nowadays, but people still make and play/read them.
Don’t know about PGE’s API, but for the OCR stuff, you may get better results with additional preprocessing before you pass images into tesseract. e.g. crop it to just the region of interest, and try various image processing techniques to make the text pop out better if needed. You can also run tesseract specifically telling it you’re looking at a single line of data, which can give better results. (e.g.
--psm 7
for the command line tool) OCR is indeed finicky…