GameShark: Armored Core For Answer Review

GameShark writes: "Though it doesn't require a copy of the original Armored Core 4, this can effectively be considered an 'expansion'. Plot-wise, it takes place ten years after the previous game's so-called "dismantlement war". The Kojima particles which provide power for weapons and defensive shields have caused a catastrophic build-up of pollution on Earth – so much, that most of humanity has taken to living in the sky in gigantic flying "Cradles", where the high-altitude air is still breathable."