Row Rumble: Block Challenge 4+

The game initially presents a field with 8 by 10 squares (the background can be any, the point is that the field is a classic rectangular matrix) and blocks of different lengths - from 1 to 4 squares. When you start the game from these blocks, with voids in random places, builds the initial row. The user swipe (left-right) can move any of the blocks to a free space. After that, the blocks already present on the field go up one cell, and a new line with blocks appears at the bottom of the matrix. In screenshot 1 we have, respectively, the state when the user has already made 3 moves.
It is possible to move any of the blocks in the game, provided that there is a free space for its movement. In the game there will be situations when when the user moves a block, there will be a void under it or under another block. Then this block will fall down. 
The essence of the game is that the player collects rows of blocks without voids. That is, he must move the blocks in such a way to collect solid rows. When a row is collected - it disappears (screenshot 2), and the blocks that were above this row - fall down. The user gets points for the collected row.
The end of the game comes when the blocks reach the top of the matrix.