{lib, ...}: {
  programs.steam = {
    enable = true;
    remotePlay.openFirewall = true; # Open ports in the firewall for Steam Remote Play
    dedicatedServer.openFirewall = true; # Open ports in the firewall for Source Dedicated Server
    localNetworkGameTransfers.openFirewall = true; # Open ports in the firewall for Steam Local Network Game Transfers
  };

  nixpkgs.config.allowUnfreePredicate = pkg:
    builtins.elem (lib.getName pkg) [
      # Allow some unfree dependencies
      "steam"
      "steam-original"
      "steam-unwrapped"
      "steam-run"
    ];

  # Allow steam to execute appimage games
  programs.appimage.enable = true;
  programs.appimage.binfmt = true;
}