What is "shariki"

Shariki ( Russian: Ша́рики, "The Balls") is a puzzle game by Russian programmer Eugene Alemzhin, developed for MS-DOS in 1994. The goal of the game is to gain progressively higher scores by matching three or more balls of the same color a in line (vertical or horizontal), by swapping adjacent balls. Each swap must result in a match. Matched balls are then removed, and new ones drop from the top to fill the gaps. The game is over when no more matches are possible in the game field.