In this captivating game, your mission is to eradicate all viruses using color-coordinated capsules. The playing field is bustling with viruses in three distinct hues: red, yellow, and blue. As a player, you have the power to maneuver each descending capsule, shifting it left or right and rotating it to align perfectly with the viruses and any pre-existing capsules. Victory is achieved when four or more capsule segments or viruses of the same color connect in either a vertical or horizontal line, causing them to vanish from the board. Your ultimate goal is to clear each level by eliminating every virus present. Beware, though—a game over is triggered if capsules pile up and block the bottle's slender neck.

Before diving into the action, players can tailor the game's starting difficulty to their liking. You can choose an initial level ranging from zero to twenty, which dictates the number of viruses you'll need to clear. Additionally, there are three speed settings that control the descent rate of the capsules within the bottle. Your score is determined exclusively by the number of viruses you eliminate; neither the time spent nor the capsules used impact your points. Conquering the highest difficulty level allows you to keep playing and boost your score, though the virus count remains constant. Bonus points are up for grabs when you wipe out multiple viruses in a single move, but initiating chain reactions—where one elimination sparks another—doesn't add to your tally. Remember, the game's speed setting plays a crucial role in scoring, with faster speeds leading to higher points.