Uridium

The Good
many different targets to shoot at, and some interesting dreadnaught ship designs. This is a classic game that should have got a bit more attention on the market (compared to others)

The Bad
Some times things happen too quickly in the game, like you'd have an enemy ship come by you so fast and shoot you (and your ship destroyed).

The Bottom Line
If you've never played it, give it a shot, it certainly kills a few minutes if you want something to do.