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Steam is a digital distribution platform for games and some software, with a native Linux client available.
Enable Multilib Repo
Enable the multilib repository if you are running a 64bit machine. Steam is 32bit so you need the 32bit libs in order to run all 32bit apps and games.
sudo nano /etc/pacman.conf
#[multilib] #Include = /etc/pacman.d/mirrorlist
Should now be:
[multilib] Include = /etc/pacman.d/mirrorlist
Hit control x + y to save and exit.
Now to update multilib.
sudo pacman -Syy
Installing Steam from the command line
sudo pacman -S steam
FOR NVIDIA USERS: Next, install Nvidia drivers.
sudo pacman -S nvidia nvidia-libgl lib32-nvidia-libgl lib32-nvidia-utils
You may have to run rebuild your initramfs, as suggested by pacman.
sudo mkinitcpio -p linux
Reboot, enjoy. If you run into an issue and have an intel cpu, it is also recommended to install the intel-ucode package. To install:
sudo pacman -Syu intel-ucode
After this you need to make grub aware of the ucode by running
sudo grub-mkconfig -o /boot/grub/grub.cfg
After that, everything should be set up. Reboot and try it out.