There's a hidden zen mode in the game. Some may call it a bug, but I say its a feature. Though, the main way to play the game would be to shoot other spaceships into oblivion and once you get frustrated by dying, then go for the zen mode.

Then, you could rate the game, share your top score and mainly provide good feedback, in which case I certainly shall return the favour.

Chill or cause mayhem in hiJack