Kotaku writes: "For the uninitiated, Treasure's Ikaruga is a vertically scrolling shoot 'em up originally released for arcades, with ports for the Dreamcast and GameCube released in 2002 and 2003 respectively. It uses a simple mechanic of polarity-your ship, the Ikaruga, can switch between black and white states; there are no traditional shooter power ups, black and white beams are your only weapon. It's a system that belies its complexity. When white, the ship can absorb all white-colored incoming enemy fire. When black, the ship can absorb all black-colored incoming enemy fire. However, when firing on ships of the opposite color, the Ikaruga does double the damage. Oh, but there's more to it than that, a layer of depth that makes Ikaruga one part shooter, one part puzzler, with a dash of rhythm and strategy tossed in. How does the Xbox Live Arcade port hold up, with Ikaruga now seven years old?"