Being a patient gamer means I play, at least in most cases, games that are few years old.
Latest adventure game I started playing is Broken Sword 5 but unfortunately it doesn’t launch right after installing it through Steam on Linux. Reading through Steam’s logs it indicated that game lacked an
steam_appid.txt file with it’s Steam appid in game’s root directory.
To correct this error I just had to create the file:
cd ~/.steam/steam/steamapps/common/Broken\ Sword\ 5 echo "262940" > steam_appid.txt