Sega Swirl

In an interesting publicity maneuver for their newly-released Dreamcast video game system, SEGA of America released a free game for the PC and DC platforms, Sega Swirl (also apparently to capitalize on the DC's logo, a Cinnabon-like swirl). The object of the game is simple. A screen fills with multi-colored swirls, and then you must remove the whole screen. A swirl removed will also remove all neighboring swirls of the same color. Gravity affects the remaining swirls, and the whole mass contract...