If you have sidequest you can click an option to upload an APK file onto the headset, then to access the game on your headset you go to your apps, you have to select from the sorting dropdown menu "unknown sources" which should show the app "Time Climb". This will run natively on your quest and won't need to be linked to a pc to run it. I wish you luck! the process is not convenient so thank you for even thinking of trying and cheers!