日本一ソフトウェア
In September 2007 Nippon Ichi Software announced the acquisition of video game developer System Prisma Corporation. On November 5, 2012 Nippon Ichi Software announced the formation of Nippon Ichi Software Asia Pte. Ltd., a wholly owned subsidiary in Singapore. In April 2010 Nippon Ichi Software announced the formation of Shishikui-ya, a wholly owned subsidiary of NIS America. In December 2011 Nippon Ichi Software announced the formation of Dione Entertainment (now Entertainment Support). On April 1, 2015 the company announced the formation of Nippon Ichi Software Vietnam Co., Ltd., a Vietnamese subsidiary of Nippon Ichi Software Asia Pte. Ltd. In March 2016 Shishikui-ya merged into Nippon Ichi Software. On April 22, 2016 Nippon Ichi Software announced the acquisition of adventure game developer FOG Inc.. On October 1, 2016 System Prisma Corporation merged into Nippon Ichi Software.