Are you able to run games on your Mac OS 9 VM?
As i stated before i would never try to run Games on a VM.
In general i use Parsec ( or just occupy ) the NASA PC´s of my Teenager Daughters for Games or 3D Blender.
But what the Hack you mean with Games for OS9 ? Are there some ? Flying Tosters running, you better download an SheepShaver based OS9 you can run as App and try yourself ;-)
A SheepShaver-based system for running Mac OS 9 under macOS
www.columbia.edu
To install this system, download and expand
Mac OS 9.zip. (The file is about 620MB in size; it contains a 1.5 GB hard disk image file.) You may copy the
Mac OS 9 application to your Applications folder or run it from anywhere else. This is a universal application, native to both Intel and Apple Silicon machines. (
Updated 29 May 2022.)
When Holding Option while clicking on the Icon to start the App you can edit ScreenSize and other Options.
UTM:
UTM configs for other MacOS on MacOS with UTM:
Config files for booting Mac OS 7-9, OS X and macOS on UTM emulator - adespoton/utmconfigs
github.com
Just extract and copy in to:
/Users/UserName/Library/Containers/utm/Data/Documents/
After Starting UTM you can see the VM in the Sidebar
Old Mac 1st Person Games
www.macintoshrepository.org
This reminds to something actual...........
For File Transfer between Ventura and OS9 just use QuickFTP Port 21 on Ventura to share a Folder via FTP ( configure your UTM OS9 with bridged mode Network and extra Adapter ) use the Standard NetworkBrowser App of OS9 to connect to your Host IP FTP.