In 2006 Hidden Palace dumped a game called Spirit Master (Nov 18, 1997 prototype) and in the 20 years since no one ever bothered to check if it works in emulation. It doesn't. In any of them. Instant black screen. I thought maybe it needed special dev hardware or was dongle protected or whatever but it works fine on my PS1. Excuse my thumb.

https://github.com/unofficial-issue-tracker/duckstation/issues/226