If you want to play those, copy any Mission Pack folders you want to play ( xatrix, rogue or z aero) from your installation to /switch/nxquake2/.
The Github releases come with libraries for Ground Zero, The Reckoning and Zaero. Since v0.5.0 the port supports mission packs and other mods with custom game code. You can use the Quake II demo for this, read the README on Github for details. You can then run the game using the Homebrew Launcher. If you want to use the config file included with the release, don't forget to select 'no' when asked if you want to overwrite it. To install it, just unzip nxquake2_050.zip to the root of your SD card, then copy the baseq2 folder from your Quake II installation to /switch/nxquake2/. hardware accelerated rendering using YQ2's G元 renderer.
