These are list of gaming websites that I compiled. They are of no particular order this is just a list for people to use for their gaming needs. I know there are more websites but this is the list that I wanted people to get started with.

According to wikipedia;

Valve co-founder Gabe Newell has stated that “Linux and open source are the future of gaming”.

Humble Bumble sales for Linux account for 18%.
As of March 2014, Steam reports that less than 1.2% of users are using some form of Linux as their platforms primary operating system.

We as a group need to change these numbers we need to keep promoting ubuntu as a operating system along with it being a system that we can play our games on.

lutris
Lutris is a gaming platform for Linux
https://lutris.net/

mame
Multiple Arcade Machine Emulator

http://www.mame.net/ the program website
http://www.mamedb.com/ the database website

gaming on linux
GamingOnLinux is the home of Linux gaming

https://www.gamingonlinux.com/index.php

steam
Digital game store
http://store.steampowered.com/

humble bundle
pay what you want and help charity
https://www.humblebundle.com/

desura
Desura is a digital distribution service for gamers
http://www.desura.com/

gog.com
gaming and movies site

Penguspy 

free & paid , open & close source, Linux games

http://www.penguspy.com/

Linux gaming database
Linux games database
http://www.lgdb.org/

The Linux Gamers’ Game List
A game list with links to the games
http://icculus.org/lgfaq/gamelist.php