by almost . Early estimates placed insured losses from the earthquake alone at US$14.5 to $34.6 billion. The Bank of Japan offered ¥15 trillion (US$183 billion) to the banking system on 14 March 2011 in an effort to normalize market conditions. Effects on business The disaster resulted in a drop in stocks at the Tokyo Stock Exchange for many video game companies at the Monday close following. Eurogamer's Gamesindustry.biz website reported that Sega Sammy's dropped 13.5 percent, ending up at ¥1530; Tecmo Koei's fell 10.7 percent to ¥626; Konami's fell 9.9 percent to ¥1610; Sony's fell 9.1 percent to ¥2550; Nintendo's fell 7.6 percent to ¥21,280; Namco Bandai's fell 6.4 percent to ¥905; and Square Enix's fell 6.2 percent to ¥1370. Edge also reported drops, but lower amounts for Sega Sammy, Nintendo, and Square Enix: 1.3 percent, 1.1 percent, and 4.5 percent, respectively. Capcom's shares fell 14.4 percent, and the company announced closures of ten amusement arcades in the Tōhoku and Kantō regions due to damage. The top 20 titles sold around 568,000 units between 6 and 12 March. In the same time period, the top 10 video game systems sold close to 195,000 units. Anoop Gantayat writing for IGN, however, speculated that most video game sales in Japan stopped when the earthquake occurred. Gamasutra's Tom Cutris noted that most titles on Japan's charts dropped in sales the following week; the top 20 titles sold approximately 275,000 units. He further noted that the top seller, Dynasty Warriors 7, sold 75 percent fewer copies compared to the previous week, when it debuted at number one. No employees of Japan's gaming community have been reported as casualties of the quake or the subsequent tsunami. IGN writers noted that most video game companies are a "significant distance" from the earthquake's epicenter. Soon after the disaster struck, rumors began circulating that Pokémon series creator Satoshi Tajiri, among other Japanese celebrities, had died in the tsunami; however, this turned out to be false when he tweeted that he was, in fact, alive. Several artists and designers used their online presences on social networking sites to provide information not only on their own situations, but to inform others of the disaster's impact. Hideo Kojima, Masahiro Sakurai, Goichi Suda and Fumito Ueda used their Twitter accounts to pass on information, with Suda encouraging his colleagues to seek shelter. Kojima announced that he would be leaving his offices