If anyone wants a diffrent taste of space battle you should try continuum (yes i spelt it right) formely called subspace and once ownder by virgin interactive now owned by users/player virgin dropped the project cause they were loosing money to hackers and players cracked it open and changed the name to avoid copywright infringement now its kinda like tradewars minus the trading all you do is kill eachother, there are soccer/capture the flag/base games/ all diffrent sorts of setups and you can even run your own servers
http://www.subspace.net very fun game been around for a very long time (at least 7 or 8 years) and best of all its completely free