6-DOWN RIVAL refers to SEGA, a Japanese multinational video game developer and publisher. SEGA is known for its iconic franchises such as Sonic the Hedgehog, Virtua Fighter, and Phantasy Star. It has been a major competitor in the gaming industry since the 1980s, when it released its first console, the Sega Master System. Since then, SEGA has gone on to produce several other consoles, including the Dreamcast, Saturn, and Genesis. SEGA has also developed and published numerous popular games, making it a major rival to other gaming companies such as Nintendo and Sony.