Some impressions of Novastrike:
It is a topdown shooter (duh), you control your direction with the left analogstick, shoot you primary weapon (targets air) with R2, secondary weapon (targets ground) with L2, toggles weapons with R1 and R2. X is afterburner boost in your current direction. Unlike blast factor/ssdhd/everyday shooter you can only shoot in you current direction.
When killing enemies they might drop upgrade kits for your weapons which makes them better/unlocks new weapons.
Game is mission based and you have a set of objectives to carry out such as "blow up that base", "protect that base" and so on.
The game is pretty hard and I died at the first level playing the middle difficulty but I pretty much fucked up my last life by doing an accidental kamikaze attack into a large ship... Levels are pretty long with multiple objectives btw.
There are three difficulties. The easiest ones gives you 4 extra lives per level, the middle one 2 extra lives and the hardest no extra lives.
Graphics are nothing special. Sound is quite good. No multiplayer as far as I could see.
So far it seems ok, but it's a lot worse than blast factor/everyday shooter/SSDHD so purchase them first. I'd give it a 6/10 from my first 30 minutes of playing, but it might get better. This is just some first impressions