World of Warcraft ended the April-June quarter with approximately 7.7 million subscribers, Activision Blizzard has revealed.

Back in March The publisher confirmed 8.3 million subscribers, meaning a 600,000 decline in just three months.

World of Warcraft remains the world's No.1 subscription-based MMO.

Whilst a 600,000 drop in just three months seems dramatic, it remains a huge number of people parting with regular payments to Blizzard each month.

That said, should the decline remain at around two million a year that's serious income wiped from Activision Blizzard's financials, and something which the firm may look to replace with alternative monetisation methods.

The high of 12 million subs back in October 2010 is likely to never again be repeated for a subscription-based game.