Scrolling Block Screen

Scrolling Block Screen is the second pattern in Alleyway that contains moving lines of blocks. Every line in a stage with this pattern can move independently of other lines in either right or left, as well as have different speeds. Some lines don't move at all. The blocks on the edge of the field loop around and reappear from the other side. Both breakable and unbreakable blocks may be affected.

After the stage with this pattern is completed, the next stage will have an Advancing Block Screen pattern.

Stages
The following stages use the Scrolling Block Screen pattern:
 * Stage 2
 * Stage 5
 * Stage 8
 * Stage 11
 * Stage 14
 * Stage 17
 * Stage 20
 * Stage 23