#!/bin/sh

steamlib=/games/SteamLibrary    # path to your steamlibrary
mygames=$(ls $steamlib/steamapps/appmanifest_*.acf | sed 's/[^0-9]*//g')    # this sed command removes everything but the digits

for game in $mygames; do
    bspc rule -a steam_app_$game desktop=^11 state=fullscreen floating=on
done