Imagine Panorama Cotton but shit. That's what Rainbow Cotton is. The presentation is nice enough at least, with the anime FMVs (probably the closest we're gonna get to an Cotton anime tbh), the graphics being decent enough for the Dreamcast (if suffering from quite a bit of asset reuse), and the OST being real nice (that stage 1 track is a perfect winter stage track). But the actual game itself is terrible. It's too slow, Cotton is too big to where you can't see your targets most of the time, and a fair amount of enemies are bullet sponges, so you have to struggle to even kill them at all. Not to mention the controls are complete ass, where Cotton feels very slippery to control and adds to the difficulty of the game by extension. This game is potentially a huge reason why the Cotton series was dead for a while, and even then, it took BEEP and other companies besides Success for her to come back into the limelight. Hard pass unless you like torturing yourself and/or you have morbid curiosity.