We've been covering the expansion of publisher Nomoc and developer Qplaze's PC and mobile online game Age of Heroes since its launch at the start of 2009.

With a claimed user base of over 250,000 and daily registration rate of 3,000, the game - which is subscription based - is rolling out fast from its launchpad in Russia and the former Soviet states.

The English language version went live in September, and it's just been announced that billing systems have been sorted out for China, Hong Kong and Indonesia; an additional 1.5 billion potential players.

All users get three weeks of free gaming, and the subscription fee is $1 per month. And there are plenty of virtual items that can be purchased, most of which cost less than $1.

You can read more about its business model in our interview - Qplaze explains micro-transactions for mobile MMOG Age of Heroes Online.

An iPhone version of the game is also expected to be released soon.