A simple script to transform an Ubuntu install into a complete game-ready (!) setup.

gamebuntu.sh

#!/bin/bash

# Gamebuntu, a simple script to transform an Ubuntu install into a complete game-ready (!) setup

set -e

cd "$(mktemp -d -t gamebuntu-XXXXXXXXXXXX)"

# start info
cat <<EOF
  ________                         ___.                    __           
 /  _____/ _____     _____    ____ \_ |__   __ __   ____ _/  |_  __ __  
/   \  ___ \__  \   /     \ _/ __ \ | __ \ |  |  \ /    \\   __\|  |  \ 
\    \_\  \ / __ \_|  Y Y  \\  ___/ | \_\ \|  |  /|   |  \|  |  |  |  / 
 \______  /(____  /|__|_|  / \___  >|___  /|____/ |___|  /|__|  |____/  
        \/      \/       \/      \/     \/             \/               

This script will set up a basic (modern) game-ready Ubuntu environment for you.

EOF

# add universe and multiverse
sudo add-apt-repository -y universe
sudo add-apt-repository -y multiverse

sudo apt-get install -y apt-transport-https ca-certificates curl gnupg lsb-release software-properties-common

sudo apt-get install -y snapd
sudo snap set system experimental.refresh-app-awareness=true
sudo snap set system refresh.retain=2
sudo snap set system refresh.timer=00:00~24:00/1

# mesa PPA (remove once an official PPA is available)
sudo add-apt-repository -y ppa:kisak/kisak-mesa
sudo apt-get update && sudo apt-get dist-upgrade

# install xanmod kernel
#echo 'deb http://deb.xanmod.org releases main' | sudo tee /etc/apt/sources.list.d/xanmod-kernel.list    
#wget -qO - https://dl.xanmod.org/gpg.key | sudo apt-key --keyring /etc/apt/trusted.gpg.d/xanmod-kernel.gpg add -
#sudo apt-get update && sudo apt-get install linux-xanmod

# enable support for i386 packages
sudo dpkg --add-architecture i386

sudo apt-get update

sudo apt-get install -y libgl1-mesa-dri:i386 mesa-vulkan-drivers mesa-vulkan-drivers:i386

sudo apt-get install -y ubuntu-restricted-extras libavcodec-extra
sudo apt-get install -y ttf-mscorefonts-installer

# install wine and lutris
wget -nc https://dl.winehq.org/wine-builds/winehq.key
sudo apt-key add winehq.key
sudo add-apt-repository -y 'deb https://dl.winehq.org/wine-builds/ubuntu/ focal main'

sudo add-apt-repository -y ppa:lutris-team/lutris

sudo apt-get install -y --install-recommends winehq-staging winetricks -y
sudo apt-get install -y libgnutls30:i386 libldap-2.4-2:i386 libgpg-error0:i386 libxml2:i386 libasound2-plugins:i386 \
  libsdl2-2.0-0:i386 libfreetype6:i386 libdbus-1-3:i386 libsqlite3-0:i386
sudo apt-get install -y lutris

# install steam
sudo apt-get install -y steam

# install discord snap
sudo snap install discord

# install other packages
sudo apt-get install -y python3 python3-venv
sudo apt-get install -y mesa-utils vulkan-tools libegl1:i386

# install noisetorch
curl -s https://api.github.com/repos/lawl/NoiseTorch/releases/latest \
    | grep '/NoiseTorch_x64.tgz' \
    | cut -d : -f 2,3 \
    | tr -d \" \
    | wget -qi -
tar -C "$HOME" -xzf NoiseTorch_x64.tgz && gtk-update-icon-cache
sudo setcap 'CAP_SYS_RESOURCE=+ep' ~/.local/bin/noisetorch

# install pulseeffects and OBS
sudo apt-get install -y pulseeffects pavucontrol
#sudo snap install obs-studio

# install Kodi from PPA
#sudo add-apt-repository -y ppa:team-xbmc/ppa
#sudo apt-get install -y kodi

# install flatpak
sudo apt-get install -y gnome-software-plugin-flatpak flatpak
flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
flatpak update
flatpak install flatseal
flatpak install flathub com.usebottles.bottles

# Build and install steamos-compositor-plus
git clone https://github.com/ChimeraOS/steamos-compositor-plus
cd steamos-compositor-plus && sudo apt build-dep -y .
sudo apt-get install -y devscripts
debuild -us -uc -b && cd .. && sudo apt install ../*.deb
# TODO: Complete Steam full-screen session

# GNOME-specific tweaks
sudo apt-get install -y gnome-tweaks
gsettings set org.gnome.shell.extensions.dash-to-dock click-action minimize || true

mkdir -p $HOME/.steam/root/compatibilitytools.d

# info at the end
echo
echo "If you'll be using Steam, it's recommended that you enable Proton to run Windows games in Wine."