This could be something that could eventually end up being supported by Aaron Giles' DREAMM. Their Discord server has some instructions on playing untested games -- maybe you'll be lucky and it'd work without too much…
One can also have a look at ScummVM if they want to play "new-old" games on OSX PPC (mostly, but not only, adventure games and RPGs). Releases are still being made in 2025 for your G3/G4/G5s running OSX 10.4/10.5, yes :)
This could be something that could eventually end up being supported by Aaron Giles' DREAMM. Their Discord server has some instructions on playing untested games -- maybe you'll be lucky and it'd work without too much…
One can also have a look at ScummVM if they want to play "new-old" games on OSX PPC (mostly, but not only, adventure games and RPGs). Releases are still being made in 2025 for your G3/G4/G5s running OSX 10.4/10.5, yes :)