Hey, glad to hear it's running on your iBook and I really appreciate the feedback! Hopefully you're not having any mouse look problems, or invisible NPCs... I've got a fix for those issues coming soon, as well as a separate build of Blue Shift and Opposing Force.
The current Blue Shift and Opposing Force builds are for Tiger and Leopard only. Cheers!
I should note:
I ran the OS 9 installer, then was doing a few other things around the apartment and when I got back, it had crashed. So I reopened it, reran it, and it seems all the files had successfully been copied, so all it effectively did the second time was prompt me to create shortcuts.
I haven't extensively tested it beyond the initial parts of the training room because I didn't have time. I didn't notice anything odd; it seemed to run just fine.
Is the OS 9 build supposed to include Blue Shift and Opposing Force, or is that only a reference to the Tiger and Leopard ports? Just tried out the Tiger port on my iMac G4; it also runs fine!