SEGA released Sonic the Hedgehog as a result of an April Fool's ploy and has released a detective visual novel titled The Murder of the Blue Hedgehog, in which players will have to solve the mystery of the blue hedgehog's death.
Amy organized a birthday celebration for Sonic, but a terrible event happened: Someone murdered him. Players in the role of a Mirage Express worker and heroes will have to unravel the mystery of the hedgehog's death.
The Murder of Sonic the Hedgehog is a headcanon, and not a Sonic Team project, according to SEGA (although "everything is canon"); this refers to a fan's interpretation or belief in a fictional story. That is, the events in the game may be interpreted in different ways.
The Murder of Sonic the Hedgehog was not released on consoles. It is unknown whether or not the game will be removed from Steam at a later date.
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