
To conquer the challenge of eliminating all viruses in the game, you'll need to skillfully use capsules that match the colors of the viruses on the board. These viruses come in three distinct hues: red, yellow, and blue. As a player, you'll guide each falling capsule, maneuvering it left or right and rotating it to align perfectly with the viruses and any capsules already in place. Victory is achieved when you manage to line up four or more capsule segments or viruses of the same color either horizontally or vertically, causing them to vanish from the board. Your ultimate goal is to clear each level by eradicating every last virus from the playing area. Be cautious, though; the game ends if capsules stack up to the point where they block the narrow neck of the bottle.
At the start of a new game, you have the freedom to choose your initial difficulty level, ranging from zero to twenty. This choice dictates the number of viruses you'll need to eliminate. Additionally, you can select from three different speed settings, which affect the descent rate of the capsules in the bottle. Remember, your score is calculated based only on the number of viruses you clear, not on how quickly you complete the level or the number of capsules you use. If you manage to conquer the top difficulty, you can keep playing to boost your score, though the number of viruses required to clear won't change. Scoring extra points is possible by eliminating multiple viruses simultaneously, but triggering chain reactions won't add to your tally. Keep in mind that playing at higher speeds can lead to a higher score, as speed is a key factor in the game's scoring system.