DerrickH writes: When Raiden first hit the arcades almost 20 years ago, there wasn't much to separate it from the dozens of other shooters that cost a quarter to play. It started its life as a standard, unexciting shoot-em-up. It was solid, but forgettable. Over the years, it's grown into more. More ships, more levels, more weapons. The game that started out as an afterthought in the genre has become one of its defining titles...
