The Japanese markets opened for the first time since Friday's earthquake today and many companies' stocks were down.

Following Friday's earthquake and tsunami in Japan gaming companies values declined when the Tokyo Stock Exchange opened for the first time since the disaster today. Gamesindustry report that at the close of Monday's trading SEGA Sammy were the worst hit, with stocks dropping 13.5% to �1530 at the end of the day.

Nintendo's stocks fell by 7.6% to �21,280 but as we reported earlier they have already confirmed that shipping won't be affected for the time being.

At the end of trading on Monday many other companies suffered serious declines. Tecmo Koei fell 10.7% to �626, Konami dropped 9.9% to �1610 and Sony were down 9.1% to �2550. Namco Bandai's stock fell to �905, a decline of 6.4%, and Square Enix were the least affected with a 6.2% decline resulting in stocks valued at �1370.