A virus is a microscopic organism that can replicate only inside the cells of a host organism. Most viruses are so tiny they are only observable with at least a conventional optical microscope.
Recognized by the Guiness Book of World Records as the MMO with the longest play time per player, and easily the oldest game on this list (launching four years ahead of World of Warcraft, way back in 2001), Runescape deserves mention because it's one of the most updated and popular games of any kind on the planet.
Demetrious Johnson Esther Lin, MMA Fighting Demetrious Johnson keeps racking up the accolades. The UFC flyweight champion is the companyâs longest-reigning current titleholder at just under four years, 10 months. His 10 successful defenses have tied former middleweight champion Anderson Silvaâs title-defense record.