Radiant silvergun, Ikagura (RS2)
RS has a small, the abillity to absorb enemies bullets if they are of the correct color. It's a small thing, but that combined with the fact that the game is so polished and one of the best games to the forgotten saturn makes it special.. one of the biggest sleeper hits around.
Sega ST-V segas arcade version of the saturn, pretty much the same hardware but a bit more memory.. the saturn is roughly the same thing as a playstation on paralell processors.
On a very tight second spot is do donpatchi, the bonus system and massive amount of bullets makes it incredbile...Do donpatchi is the hier to Raiden.. or the genere where smpups went from pre-form shooters (R-type) to true skill bullet dogers.