10 Tetrises in center column without using hold ;)
CubeStorm features a "2.5D Rotation System" where pieces can be rotated 180° around the x-axis and y-axis in addition to the usual z-axis 90° rotations.
Going at moderate pace to illustrate y-axis rotations.
ohh, i was wondering why a green pieice fit on top of a red piece, but now i understand. the green piece can do some kind of mirror rotate or something.