I'd've had to start a Humble Bundle account and then I'd've had to check whether the game works on WINE (Steam says it doesn't have a Linux version), and so on, and I already have a backlog of about six games to play which I might not complete before the end of year, let alone the end of term (and that is working games, let alone whatever will happen if I get at least one of Blizzard's games to work).