The focus of the eyes can be seen in three dimensions by intentionally matched by shifting back and forth. Also referred to as a three-dimensional image. ■ random dot stereogram It's image that can not be seen only as seemingly noise, but it is an image that emerges is three-dimensional Taken together, well focus. ■ practice way as with respect to stereo grams please refer to the following Wikipedia stereogram http://en.wikipedia.org/wiki/Stereoscopy ---------------------------- How to play ---------------------------- ■ rules · Read the number that pops up stereogram practice how to reference. · The read the same number as the number to select the number that appears at the bottom. · Please tap the color of as soon as possible correct answer. · Since the game score is countdown, please tap the number of correct answers before they become 0. · Remaining game score will be added to the total score. ■ game screen display · Total score Remaining game score when you clear will be added. · Game count Surface will proceed Clearing. · Game Score Time spent in the game will be displayed as a score. ■ game level of · Easy Please tap the correct answer within 20 seconds. 1 - 10 of problem appears. Guide to match the view appears. · Normal Please tap the correct answer within 20 seconds. 1 - 25 of problem appears. Guide to match the view appears. · Hard Please tap the correct answer within 15 seconds. 1 - 25 of problem appears. Guide to match the perspective does not appear. ※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※ ※※ I's Free, so try. ※※ ※※※※※※※※※※※※※※※※※※※※※※※※※※※※※※