Santa Monica-based Activision is expanding its international capability with a new office is Seoul, Korea, the company announced Wednesday. Activision said that it has opened a publishing office in Seoul, through the acquisition of CSR Entertainment, a software distributor. CSR Entertainment is a Korean software distributor, which previously distributed Activision's products. Terms of the acquisition were not disclosed. Activision said that the office will allow it to fully leverage its portfolio in the territory. Activision is a publisher of a wide range of entertainment titles for PCs and consoles.