Columns Master Publisher: Koo-Land Genre: Educational Released: 5 Nov, 2013 Size: 20.1 MB Price: FREE! Click here to request a review of this app App Store Info Description Gem stacking game like the classic Columns. Make lines of 3 or more of the same gem to match them. You can make horizontal, vertical and diagonal matches. A smiley will remove all the gems of the type on which you drop it! Screenshots Screenshot 1 of 6