BBC has released its first trailer for the TV movie about the making of Grand Theft Auto called The Gamechangers. Daniel Radcliffe (best known for his role as Harry Potter) stars as Sam Houser, co-founder of Rockstar Games, who produced Grand Theft Auto 3 and made GTA one of the best-selling video game franchises of all-time. Grand Theft Auto 3 and its sequels gave players the freedom to participate in various missions or tasks.