It has the same gameplay concept as Tetris; simply all the player has to do is to rotate and
maneuver the falling pieces into a proper position in order to form complete layers
in the rectangular playground. But Welltris changes this rectangular arena into a four
sided well with grid-like walls and bottom where the falling pieces can be moved from
wall to wall within the well. Form the pieces into solid rows either horizontally or vertically
on the bottom of the well.