Japanese mobile carrier Softbank Mobile announced yesterday that it will offer to acquire majority shares of Gungho Online Entertainment, a social gaming company.

Remember Ragnarok Online? It used to be a huge hit, with some 40 million players on the massive multiplayer online role-playing game. Well, just recently, Gungho also received a lot of press coverage for its newest hit, Puzzle & Dragons, something which also got us at e27 hooked on for a while now. Two weeks back, it was reported to have passed the 10 million download mark.

With this partnership in place, Softbank is looking to expand sales of online and smartphone game titles globally. Gungho’s success to date has been kept very much local within Japan, though it has a US subsidiary. Recently, the company also launched its online store for Puzzle & Dragons’s merchandise like plush toys, iPhone cases and mugs.

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SD Japan likewise points out a relationship between the companies: Softbank was founded by Masayoshi Son, and Gungho was established by his brother, Taizo Son, a serial entrepreneur who also runs a tech startup incubator by the name of Movida Japan.