<P> Harry Potter: Hogwarts Mystery was developed by Los Angeles - based mobile video game developer Jam City . The game will be published by Portkey Games, a label established by Warner Bros. Interactive Entertainment to create games based on Harry Potter' . Hogwarts Mystery will be Portkey's debut game . Actors from the Harry Potter film series make up the voice cast for the staff of Hogwarts in the game, including Michael Gambon, Maggie Smith, Gemma Jones, Sally Mortemore, Warwick Davis, and Zoë Wanamaker who all voice their respective characters from the films . </P> <P> The game was announced on 18 January 2018 . The game was scheduled for release on Android and iOS mobile devices, and was later released on 25 April 2018 . The game's release featured many components found in freemium (free - to - play) games, such as microtransactions . Following backlash from fans, many of these microtransactions were reduced in price . </P> <Table> <Tr> <Th> Reception </Th> </Tr> <Tr> <Td> <Table> <Tr> <Th_colspan="2"> Aggregate score </Th> </Tr> <Tr> <Th> Aggregator </Th> <Th> Score </Th> </Tr> <Tr> <Td> Metacritic </Td> <Td> 43 / 100 </Td> </Tr> <Tr> <Th_colspan="2"> Review scores </Th> </Tr> <Tr> <Th> Publication </Th> <Th> Score </Th> </Tr> <Tr> <Td> IGN </Td> <Td> 3.5 / 10 </Td> </Tr> <Tr> <Td> GameZebo </Td> <Td> 80% </Td> </Tr> <Tr> <Td> App Advice </Td> <Td> 79% </Td> </Tr> <Tr> <Td> Pocket Gamer </Td> <Td> 50% </Td> </Tr> <Tr> <Td> The Guardian </Td> <Td> </Td> </Tr> </Table> </Td> </Tr> </Table> <Tr> <Th> Reception </Th> </Tr>

How many years are there in hogwarts mystery game