Can you put older games on it, such as the older Age of Empires games, the Age of Mythology games, the Star Wars: Empire at War games, etc.?
if you are looking to play windows based games in ubuntu you could try 'wine' http://www.winehq.org/download/ubuntu
also for older games like 'DAVE' you could try DOSBox
you can get both of them in software center
All the games you told above is basically games that were developed to run in Windows. But you can run it on your Ubuntu system with varying degrees of success using:
(A GUI for Wine allowing to install Windows games and applications on Linux)