Coolki¹

Coolki is a simple, addictive color-lines puzzle game for Chrome. Move balls on the board to form straight lines of the same color. When a line of five or more balls is created, it disappears and you score points equal to the removed balls. The game supports high-resolution displays and smooth gameplay.

Features include future-ball previews, undo/redo, three difficulty levels, resume last game, fast switching, and sound effects with music. The free version includes ads, and English and Polish instructions are included.