Replay value is not the best, you can't replay this game to many times or else it just losese it fun.
With all the weapons you can customize your ship to how you want, my favorite waepon has always been the auto-tracking macine gun, very usfull. That eqquipped with the plasma cannon and micro-missles is a very good armament. To use weapons and dodge bullets as you progress and the game gets hard takes skill. People prefer the pulse cannon but I don't see the big deal with it. The missions are very smooth. If space shooters are you thing then this is the game for you.