Another biggie with ET:QW is that the GNU/Linux client will be out soon. It runs well enough under wine bu will be much better once it's native...

As for the game play it's great! They have done a marvelous job with this game. The depth of play is very good. The more you play it the more you discover and the better it gets. Most online shooters the two different sides are kept very similar to help with the balance. What you end up with is the same thing on both sides just with different skins. With ET:QW the two sides are very different but some how the game is balanced.