"To develop an MMORPG costs anywhere in the region of
$40m to $50m," he says. "If it's successful, you're going to continue
to develop content for it all through its lifetime, so some of these
games can live on for four, five, six years.
"That initial budget of $40m could end up over the life of a project approaching $80m, $90m - they're not cheap!"
It's estimated that the market is already worth more than £500m ($1bn) a year.
Massively Multiplayer Online Role-Playing Games (MMORPG) participants pay for the software plus a monthly subscription to stay in the online world. One, World of Warcraft, has more than eight million paying members who generated more than $470m last year.
Article Link (BBC)