"In a nutshell, it's a game that represents synaesthesia: where one sense triggers reactions in another. At least, that's according to Mizuguchi. He wants this to be a fusion between sound and visuals, and to that end you play a 'purifier' of sorts. Your role is to fly through different 'archives,' and purify them. You do this by firing two different weapons, a rapid-fire but low power machine gun of sorts and a lock-on blast, at the contaminated locations. And, when things get hairy, you can trigger a bomb that takes out everything on-screen. Purify the entire archive and it will 'evolve' into something new."