Linux Simulation Games
A difficult classification so we have decided to extend the classification category to include simulations, some might argue the applications are educational and your right or at least they can be, they are also applications that require skill, however although these games (simulations) require skill to use properly it is still relatively easy to use without fear of going wrong.
A Word About Games
Many people are frustrated for want of a better expression with Linux because they think it is lacking in the Games department, all said and done this is not an accurate assessment. Want to know what Gutsy Gibbon support by way of games just look here Intrepid Ibex Games and Ubuntu Community Docs Games