In the game "slider" you need to move blocks in a horizontal plane. Blocks have different lengths and must fill a free space of the same length. The block itself is moved either with a finger, if it is a mobile phone screen, or with a mouse, if it is a computer. If, while moving a block, it enters a free space, then, falling into it, it fills a horizontal line. If the entire line is filled completely, it disappears, and all the blocks that were higher move to its place, and points are awarded. Upon reaching a certain number of points, the game moves to the next level, and all points are remembered. The best score of the game for a given player is also kept. There is a leaderboard, which can be called up by clicking on the "cup" symbol in the upper left corner of the playing field.