Epic Games and Battle.net Launcher Support
Run the following to run these.
sudo pacman -S --needed nvidia-dkms nvidia-utils lib32-nvidia-utils nvidia-settings vulkan-icd-loader lib32-vulkan-icd-loader
Run to get the Battle.net connection working I had to run:
sudo sysctl -w net.ipv4.ip_default_ttl=80
Some games will require winetricks to have .Net or Visual C++ runtime installed.
Use winetricks dotnet472 vcrun2015 (command line works for adding to your WINE prefix)