Transformartian is an adaptation of Sid Sackson's Transformation to Icehouse pieces. Two or four players try to swap pieces on a 5x5 grid in order to form various shapes. Transformartian and Transformation appear to be mostly identical, aside from the pieces used, but Transformartian includes rules for 3 or 6 players using one additional stash/color on a 5x6 grid, as well as TRANSFORMARTIAN ExxTRA, a selection of additional goal shapes.