Firstly, nothing recognisable happens upon advancing in levels nor upgrading. Oh yes, there may be an island or two that prevent you from firing down one or two ships in the certain parts of a level, but just as a shooting gallery the ships don’t have any effect if they cross from one side of the screen to another. Enemy ships appear to travel at the same pace throughout the entirety of the game, the time you have to shoot down ships does not visibly waver, and there is no randomness to any of the game. There is no incentive for me or anyone else to shoot down any ships or advance in any way other than for the sake of an arbitrary progression from one level to the next.– V8 Ninja

