There are thousands of games available which are free software and will run natively on Ubuntu. In addition, there are emulators that will run many games for Windows or even classic game consoles. Whether you enjoy card games or shoot 'em ups, there's something for everyone.
All the games in the following sections are native to Ubuntu. This means that there is either an Ubuntu package in the repositories, or available from a third-party. Differences between these sections come down to a single issue: licensing. The Ubuntu Philosophy is that all software distributed with Ubuntu is free and open-source. Some of the following games may be free but not open-source. Others may require a fee to use them. Still others may require payment for certain aspects of a game, but also offer a free element.
Other GNU/Linux Games
Games Not Packaged For Ubuntu - A list of games that will work on Ubuntu, but are not packaged.
Emulators - These emulators of popular systems allow you to play classic and current games on Ubuntu.
Helping With Games On Ubuntu
There are various ways to help the Ubuntu community make Ubuntu a better gaming platform:
Debian Games Team - Help the Debian Games Team. It will ultimately enhance Ubuntu as a gaming platform. Chat with the team on their official Debian IRC channel at #debian-games on irc.debian.org (OFTC).
- You can contribute to the wiki by adding information to the Games subpages.
Commercial GNU/Linux Games
Penguspy - A collection of free, commercial, open and closed source games for Linux.
Lots of good ideas e.g. "how easy it is to create a video game under Ubuntu".
Gaming on Linux - has links to paid games as well as free games