

I FOUND IT! I ACTUALLY FOUND IT! I had exhausted all my more targeted ways of finding it and resorted to Google images searching for “point and click game bar” and found a screenshot I recognised.
The game is Mudlarks.
Sorry for the couple of details I misremembered, and thank you to everyone trying to help.
I’ve had the most issues with adapters which use ASMedia chips but they’re so ubiquitous in these devices they’re impossible to avoid. Try googling the ASMedia chip model number to see if people report issues before buying if it’s data you care about.