Yep it's next to impossible to play OS9 games, I don't think any of the PPC emulators support the GFX of bugdom or the original nanosaur. You'd have to find the Windows ports and emulate or use WINE. I also thought ottomatic was a great game. Bugdom2 was a bit childish for me though.
I think they were a pretty small team, everytime I emailed support, Brian (CEO) responded.