It's now the largest Korean mobile publisher in terms of revenue, so Gamevil is looking overseas for expansion opportunities.

It's just announced the setting up of Gamevil Japan.

Headed by Jonggu Na, the Tokyo office will carry out various services, including localisation and marketing, as well as building on the company's existing partners in the countries, including Apple, Google, NTT DoCoMo, KDDI, Softbank, DeNA and GREE.

"The Japanese smartphone game market is growing rapidly and has one of the strongest gaming communities in Asia," said Na.

"By opening a direct presence in Japan and gaining new insights, Gamevil continues its commitment to becoming a top global mobile game company."