In the game called Bubble Star, a square grid with randomly placed colored balls covers the screen. Upon starting the game, the player's task is to match three similarly colored balls in a row either horizontally or vertically.
The core mechanic revolves around creating chains of matching colors by swapping adjacent balls. To do this, the player selects two balls and swaps them, attempting to make perfect matches. Each successful move removes the matched balls from the grid, making room for new balls to drop in.
The objective is to clear as many colored balls as possible to reach a high score, all without exceeding a predetermined grid height. Bubble Star can be played directly in the browser without the need for a download or registration. The game continues indefinitely, with the challenge increasing as the grid grows more crowded, adding a layer of complexity to the puzzle.