Nexus is OK...it's mind-bogglingly slow paced though, and can end up being extremely boring. And it's not really balanced at all.
Case in point of the slow nature of it - I once had to restart a mission because I was unable to complete it. Why? Well, it was two ships vs. one, I had a light cruiser or frigate and my main ship, which is kind of like a heavy cruiser - the enemy had a really weak ship, something like a destroyer. So the enemy was circling my main ship, while my cruiser was firing at it - except the cruiser's weapons did so little damage and fired so slowly that it would drain the enemy shields, and by the time the weapons fired again, they had restored just enough energy to deflect the shot. Meanwhile, my other ship was spinning around it's axis trying to bring it's weapons to bare, but was rotating so slowly that it couldn't turn fast enough to actually fire. I tried everything for about 10 minutes until I finally gave up and restarted the mission from the beginning.
It is fun and interesting to play, and it's a pretty novel idea; just don't go into it expecting an action packed thrillride.
