As usual for Team Beef ports, you can install the app completely free of charge, but some functionality won’t be available until you take extra steps to add the full PC game files yourself, from a copy you own. You’ll also need to enable developer mode on your Quest first, as per usual for SideQuest. If you haven’t done this before, you can read more in our guide to setting up and using SideQuest.
As it stands, installing the Quake 3 Arena port directly from SideQuest includes the official (and free) id software demo. This means you’ll be able to play some of the single-player for free with just the SideQuest install, alongside multiplayer on specific servers marked as ‘DEMO’.
The SideQuest install also comes with a companion app called Q3 Launcher that adds additional functionality, such as changing your player name and installing mods, new single-player campaigns and map packs.
If you want to play the full game, you will need to own a legal copy of Quake 3 Arena for PC on Steam or elsewhere. Once you locate your installed PC files for Quake 3 Arena, all you need to do is copy all the PK3 files in the baseq3 folderinto the /ioquake3quest/baseq3 folder on your Quest, using SideQuest or Windows explorer.
The port includes full tracked VR weapons, intuitive VR weapon selection, support for 90, 80 and 72Hz framerates, along with cross-platform play with PC and Android players.