5.0
Effect can look dull compared to modern games on this platform, this is an old (but gold) game after all
Music is Good
You do adjust the circle crosshair around the enemies and shoot it, it doesn't have to be exactly centered, the shots will hit as long as your crosshair meet with enemies.
the speed you can adjust by swiping up and down on two circular bars on the side, though this may not be obvious.
Definetly a blast to the past when mobile games were like this, mostly
This also have PC version called Subdivision infinity: DX, which is much more recent and detailed version of this. Havent try it but looks cool.