Can "older" games such as "Age of Empires", "Age of Mythology", and "Star Wars: Empire at War" be installed on Ubuntu?
Solution 1:
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:
wine 
or
playonlinux
(A GUI for Wine allowing to install Windows games and applications on Linux)