Are there any free, high quality, career mode games for Ubuntu?

Battle for Wesnoth

• Info - The Battle for Wesnoth is a Free, turn-based tactical strategy game with a high fantasy theme, featuring both single-player, and online/hotseat multiplayer combat. Fight a desperate battle to reclaim the throne of Wesnoth, or take hand in any number of other adventures..
• Playdeb - Not Yet Available
• Official Site - http://www.wesnoth.org/
• Graphics - 6/10
• Developers - http://wiki.wesnoth.org/Support
• Size - 280 MB

0 A.D.

• Info - A.D. ("Zero ey dee") is a historical Real Time Strategy game currently under development by Wildfire Games. As the military leader of an ancient civilisation, you must gather the resources you need to raise a military force capable of dominating your enemies.
• PlayDeb - http://www.playdeb.net/software/0%20A.D.
• Official Site - http://www.wildfiregames.com/0ad/
• Graphics - 10/10
• Developers - http://trac.wildfiregames.com/wiki/GettingStartedProgrammers
• Size - 260 MB