Easy rule but fun & relax! zen block™ is a block puzzle game. game rule is very simple for all ages. you'll feel mind-fullness like japanese "zen". ■ how to play • drag the blocks • fit the blocks in the frame • blocks can't be rotated. • no time limits! ■ features • clasic block puzzle game like tangram • everybody can play this games, irrespective of age or sex. • over 200+ puzzle stages • minimal graphics and sound • you can play offline in anytime. • you'll feel mind-fullness with this puzzle. ■ notes • zen block contains the ads like banner, interstitial, video ads. • zen block is free to play, but if you want, you can purchase in-app items like ad free and hints.