- Purchase your copy on GOG or Steam. The files need to be from a Windows installation (I think.)
- Download the latest release or build from the source. See YAML pipelines for reference.
- Drag the installation files into a new folder called
fallout1
in yourswitch
folder on the root of your SD card. - Put the necessary executable in your
switch
folder on the root of your SD card, either.nro
or.nso
.
Note: I would not expect your original Fallout 1 saves/non-CE saves to work. And keep multiple saves! Quick save/quick loading currently save/load twice. This will be fixed... eventually.