This is the most ethical and preservation-friendly method. Used copies of Runabout (Japan) can be found on:
Once you own the disc, you can rip it to ISO/BIN format using: Runabout -Japan- ROM -ISO- xia zai Sony Playstation ...
The Japanese version of Runabout differed significantly from its Western counterpart. This is the most ethical and preservation-friendly method
Certain non-profit digital libraries (like the Internet Archive) host PS1 ISOs for “preservation and research.” Do note that downloading copyrighted material remains a legal grey area. Once you own the disc, you can rip
Once you have your Runabout (Japan) ISO, you need an emulator. The original PlayStation is obsolete, but these programs work beautifully: