WTF?! Not for the first time, something that started as an April Fools' joke has gone on to become an unexpected success. On this occasion, it was Sega's The Murder of Sonic the Hedgehog, a free visual novel in which the speedy blue mascot has been killed (or has he?). Not only has it become Sega's best-performing PC title but also the 62nd highest-rated game on Steam.