Any troubles?First, please check the FAQ on our website.(Link is on the mid of this page)********************************************Doku-Doku is a high-quality puzzle game.Your goal is to solve each puzzle by filling in the correct numbers in each line, row, and square without repeating.[Supported OS] – 1.6, 2.1, 2.2, 2.3, 3.1, 3.2, 4.0, 4.1[Supported Screen] – HVGA(320×480) and larger[Xperia(TM) PLAY] – Not Optimized[Move to SD card] – Impossible[Language] – Japanese, English[Incompatible] – SH-13C(OS2.3), S31HW(OS2.2)(We check almost all devices distributed by mobile phone carriers in Japan. Other devices are not guaranteed to be compatible.)(C)2006-2010 KEMCO/SkynetCorporation Co.,Ltd.